diff --git a/applications/solvers/combustion/PDRFoam/XiModels/XiEqModels/XiEqModel/XiEqModel.C b/applications/solvers/combustion/PDRFoam/XiModels/XiEqModels/XiEqModel/XiEqModel.C
index 857f071c1d..084ffc1aef 100644
--- a/applications/solvers/combustion/PDRFoam/XiModels/XiEqModels/XiEqModel/XiEqModel.C
+++ b/applications/solvers/combustion/PDRFoam/XiModels/XiEqModels/XiEqModel/XiEqModel.C
@@ -109,7 +109,7 @@ Foam::XiEqModel::calculateSchelkinEffect(const scalar uPrimeCoef) const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(Nv.dimensions(), Zero)
diff --git a/applications/solvers/combustion/chemFoam/createBaseFields.H b/applications/solvers/combustion/chemFoam/createBaseFields.H
index 80dea2584b..9431d042d2 100644
--- a/applications/solvers/combustion/chemFoam/createBaseFields.H
+++ b/applications/solvers/combustion/chemFoam/createBaseFields.H
@@ -12,7 +12,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar("Ydefault", dimless, 1)
@@ -29,7 +29,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar("p", dimPressure, p0)
@@ -46,7 +46,7 @@ Info<< "Creating base fields for time " << runTime.timeName() << endl;
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar("T", dimTemperature, T0)
diff --git a/applications/solvers/heatTransfer/thermoFoam/createFields.H b/applications/solvers/heatTransfer/thermoFoam/createFields.H
index 7c0a8b2c95..7b12c48794 100644
--- a/applications/solvers/heatTransfer/thermoFoam/createFields.H
+++ b/applications/solvers/heatTransfer/thermoFoam/createFields.H
@@ -44,7 +44,7 @@ IOobject turbulencePropertiesHeader
     mesh,
     IOobject::MUST_READ_IF_MODIFIED,
     IOobject::NO_WRITE,
-    false
+    IOobject::NO_REGISTER
 );
 
 if (turbulencePropertiesHeader.typeHeaderOk<IOdictionary>(false))
diff --git a/applications/solvers/lagrangian/reactingParcelFoam/createMeshesPostProcess.H b/applications/solvers/lagrangian/reactingParcelFoam/createMeshesPostProcess.H
index 6dabcba73b..0d5bb1c7ee 100644
--- a/applications/solvers/lagrangian/reactingParcelFoam/createMeshesPostProcess.H
+++ b/applications/solvers/lagrangian/reactingParcelFoam/createMeshesPostProcess.H
@@ -9,7 +9,7 @@ IOobject io
     mesh,
     IOobject::READ_IF_PRESENT,
     IOobject::NO_WRITE,
-    false
+    IOobject::NO_REGISTER
 );
 
 if (io.typeHeaderOk<IOdictionary>())
@@ -32,4 +32,4 @@ if (io.typeHeaderOk<IOdictionary>())
     );
 }
 
-
+// ************************************************************************* //
diff --git a/applications/solvers/multiphase/compressibleInterFoam/surfaceTensionModels/liquidProperties/liquidPropertiesSurfaceTension.C b/applications/solvers/multiphase/compressibleInterFoam/surfaceTensionModels/liquidProperties/liquidPropertiesSurfaceTension.C
index 78a9e7ce45..f2f259dbc5 100644
--- a/applications/solvers/multiphase/compressibleInterFoam/surfaceTensionModels/liquidProperties/liquidPropertiesSurfaceTension.C
+++ b/applications/solvers/multiphase/compressibleInterFoam/surfaceTensionModels/liquidProperties/liquidPropertiesSurfaceTension.C
@@ -84,7 +84,7 @@ Foam::surfaceTensionModels::liquidProperties::sigma() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimSigma
diff --git a/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/laserDTRM.C b/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/laserDTRM.C
index 422b4d364d..f27015326b 100644
--- a/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/laserDTRM.C
+++ b/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/laserDTRM.C
@@ -724,7 +724,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::laserDTRM::Rp() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimPower/dimVolume/pow4(dimTemperature), Zero)
diff --git a/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/localDensityAbsorptionEmission/localDensityAbsorptionEmission.C b/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/localDensityAbsorptionEmission/localDensityAbsorptionEmission.C
index 98a663e22e..11225dc2a1 100644
--- a/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/localDensityAbsorptionEmission/localDensityAbsorptionEmission.C
+++ b/applications/solvers/multiphase/icoReactingMultiphaseInterFoam/laserDTRM/localDensityAbsorptionEmission/localDensityAbsorptionEmission.C
@@ -97,7 +97,7 @@ Foam::radiation::localDensityAbsorptionEmission::aCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(inv(dimLength), Zero)
@@ -130,7 +130,7 @@ Foam::radiation::localDensityAbsorptionEmission::eCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(inv(dimLength), Zero)
@@ -163,7 +163,7 @@ Foam::radiation::localDensityAbsorptionEmission::ECont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
diff --git a/applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtureNew.C b/applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtureNew.C
index 0de3d22ae3..686dce38ef 100644
--- a/applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtureNew.C
+++ b/applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtures/temperaturePhaseChangeTwoPhaseMixtureNew.C
@@ -46,7 +46,7 @@ Foam::temperaturePhaseChangeTwoPhaseMixture::New
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/solvers/multiphase/interFoam/interMixingFoam/alphaEqn.H b/applications/solvers/multiphase/interFoam/interMixingFoam/alphaEqn.H
index 9c1017e617..36c7aa00fe 100644
--- a/applications/solvers/multiphase/interFoam/interMixingFoam/alphaEqn.H
+++ b/applications/solvers/multiphase/interFoam/interMixingFoam/alphaEqn.H
@@ -30,7 +30,7 @@
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimless,
diff --git a/applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/phaseChangeTwoPhaseMixture/phaseChangeTwoPhaseMixtureNew.C b/applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/phaseChangeTwoPhaseMixture/phaseChangeTwoPhaseMixtureNew.C
index db6564ffa1..46801b5053 100644
--- a/applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/phaseChangeTwoPhaseMixture/phaseChangeTwoPhaseMixtureNew.C
+++ b/applications/solvers/multiphase/interPhaseChangeFoam/phaseChangeTwoPhaseMixtures/phaseChangeTwoPhaseMixture/phaseChangeTwoPhaseMixtureNew.C
@@ -48,7 +48,7 @@ Foam::phaseChangeTwoPhaseMixture::New
             U.db(),
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/test/CompactIOList/Test-CompactIOList.C b/applications/test/CompactIOList/Test-CompactIOList.C
index 66d5b8dd7e..0db36f346c 100644
--- a/applications/test/CompactIOList/Test-CompactIOList.C
+++ b/applications/test/CompactIOList/Test-CompactIOList.C
@@ -69,7 +69,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             size
         );
@@ -101,7 +101,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -125,7 +125,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             size
         );
@@ -157,7 +157,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/test/PatchFunction1/Test-PatchFunction1.C b/applications/test/PatchFunction1/Test-PatchFunction1.C
index 33343e7608..72ab0692a7 100644
--- a/applications/test/PatchFunction1/Test-PatchFunction1.C
+++ b/applications/test/PatchFunction1/Test-PatchFunction1.C
@@ -92,8 +92,8 @@ int main(int argc, char *argv[])
             runTime.timeName(),
             mesh,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_WRITE,
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedVector(Zero)
diff --git a/applications/test/checkDecomposePar/Test-checkDecomposePar.C b/applications/test/checkDecomposePar/Test-checkDecomposePar.C
index 5cc6bb2311..d616b013c7 100644
--- a/applications/test/checkDecomposePar/Test-checkDecomposePar.C
+++ b/applications/test/checkDecomposePar/Test-checkDecomposePar.C
@@ -103,7 +103,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/test/decomposedBlockData/Test-decomposedBlockData.C b/applications/test/decomposedBlockData/Test-decomposedBlockData.C
index 81d62397cd..42df38b775 100644
--- a/applications/test/decomposedBlockData/Test-decomposedBlockData.C
+++ b/applications/test/decomposedBlockData/Test-decomposedBlockData.C
@@ -67,7 +67,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/test/fvSolutionCombine/Test-fvSolutionCombine.C b/applications/test/fvSolutionCombine/Test-fvSolutionCombine.C
index 9a3e8b1810..ded4fe6062 100644
--- a/applications/test/fvSolutionCombine/Test-fvSolutionCombine.C
+++ b/applications/test/fvSolutionCombine/Test-fvSolutionCombine.C
@@ -116,7 +116,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/test/mapDistributePolyMesh/Test-mapDistributePolyMesh.C b/applications/test/mapDistributePolyMesh/Test-mapDistributePolyMesh.C
index 554dbce72b..ea17c1a878 100644
--- a/applications/test/mapDistributePolyMesh/Test-mapDistributePolyMesh.C
+++ b/applications/test/mapDistributePolyMesh/Test-mapDistributePolyMesh.C
@@ -63,7 +63,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/test/searchableSphere/Test-searchableSphere.C b/applications/test/searchableSphere/Test-searchableSphere.C
index ae76fd437f..672319706b 100644
--- a/applications/test/searchableSphere/Test-searchableSphere.C
+++ b/applications/test/searchableSphere/Test-searchableSphere.C
@@ -204,7 +204,7 @@ int main(int argc, char *argv[])
         *dummyTimePtr,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false  // do not register
+        IOobject::NO_REGISTER
     );
 
     Info<< "Testing searchable sphere" << endl;
diff --git a/applications/test/surfaceMeshConvert/Test-surfaceMeshConvert.C b/applications/test/surfaceMeshConvert/Test-surfaceMeshConvert.C
index ecfead0f7e..fe7781ebeb 100644
--- a/applications/test/surfaceMeshConvert/Test-surfaceMeshConvert.C
+++ b/applications/test/surfaceMeshConvert/Test-surfaceMeshConvert.C
@@ -510,7 +510,7 @@ int main(int argc, char *argv[])
                     runTime,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 std::move(surf)
             );
diff --git a/applications/utilities/finiteArea/makeFaMesh/findMeshDefinitionDict.H b/applications/utilities/finiteArea/makeFaMesh/findMeshDefinitionDict.H
index a5697ea69e..956b3e3bf7 100644
--- a/applications/utilities/finiteArea/makeFaMesh/findMeshDefinitionDict.H
+++ b/applications/utilities/finiteArea/makeFaMesh/findMeshDefinitionDict.H
@@ -74,7 +74,7 @@ autoPtr<IOdictionary> meshDictPtr;
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false,  // no registerObject
+        IOobject::NO_REGISTER,
         true    // is globalObject
     );
 
diff --git a/applications/utilities/mesh/conversion/ccm/foamToCcm/getTimeIndex.H b/applications/utilities/mesh/conversion/ccm/foamToCcm/getTimeIndex.H
index b8cb089b4b..a0c0283461 100644
--- a/applications/utilities/mesh/conversion/ccm/foamToCcm/getTimeIndex.H
+++ b/applications/utilities/mesh/conversion/ccm/foamToCcm/getTimeIndex.H
@@ -16,7 +16,7 @@
             runTime,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/applications/utilities/mesh/conversion/foamToFireMesh/getTimeIndex.H b/applications/utilities/mesh/conversion/foamToFireMesh/getTimeIndex.H
index 8d6660c96e..aff8a90269 100644
--- a/applications/utilities/mesh/conversion/foamToFireMesh/getTimeIndex.H
+++ b/applications/utilities/mesh/conversion/foamToFireMesh/getTimeIndex.H
@@ -16,7 +16,7 @@
             runTime,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/applications/utilities/mesh/conversion/foamToStarMesh/getTimeIndex.H b/applications/utilities/mesh/conversion/foamToStarMesh/getTimeIndex.H
index 8d6660c96e..aff8a90269 100644
--- a/applications/utilities/mesh/conversion/foamToStarMesh/getTimeIndex.H
+++ b/applications/utilities/mesh/conversion/foamToStarMesh/getTimeIndex.H
@@ -16,7 +16,7 @@
             runTime,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/applications/utilities/mesh/conversion/foamToSurface/getTimeIndex.H b/applications/utilities/mesh/conversion/foamToSurface/getTimeIndex.H
index 8d6660c96e..aff8a90269 100644
--- a/applications/utilities/mesh/conversion/foamToSurface/getTimeIndex.H
+++ b/applications/utilities/mesh/conversion/foamToSurface/getTimeIndex.H
@@ -16,7 +16,7 @@
             runTime,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/applications/utilities/mesh/generation/PDRblockMesh/PDRblockMesh.C b/applications/utilities/mesh/generation/PDRblockMesh/PDRblockMesh.C
index 75fbbe7016..f6907cad1c 100644
--- a/applications/utilities/mesh/generation/PDRblockMesh/PDRblockMesh.C
+++ b/applications/utilities/mesh/generation/PDRblockMesh/PDRblockMesh.C
@@ -191,7 +191,7 @@ int main(int argc, char *argv[])
                 runTime,            // registry
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false  // Do not register
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/utilities/mesh/generation/blockMesh/findBlockMeshDict.H b/applications/utilities/mesh/generation/blockMesh/findBlockMeshDict.H
index 43f4ffecb6..5dab776091 100644
--- a/applications/utilities/mesh/generation/blockMesh/findBlockMeshDict.H
+++ b/applications/utilities/mesh/generation/blockMesh/findBlockMeshDict.H
@@ -73,7 +73,7 @@ autoPtr<IOdictionary> meshDictPtr;
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (!meshDictIO.typeHeaderOk<IOdictionary>(true))
diff --git a/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C b/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C
index 7ea12e1f2a..05e0748824 100644
--- a/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C
+++ b/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMesh.C
@@ -679,7 +679,7 @@ int main(int argc, char *argv[])
                         runTimeExtruded,        //mesh,
                         IOobject::READ_IF_PRESENT,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     )
                 )
             );
@@ -774,7 +774,7 @@ int main(int argc, char *argv[])
                 runTimeExtruded,
                 IOobject::READ_IF_PRESENT,  // Read fv* if present
                 IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh
         );
diff --git a/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C b/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C
index 154cc796cb..320a1127f0 100644
--- a/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C
+++ b/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C
@@ -1272,7 +1272,7 @@ void extrudeGeometricProperties
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         regionMesh.nFaces()
     );
@@ -1356,7 +1356,7 @@ void extrudeGeometricProperties
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         regionMesh.nCells()
     );
@@ -2389,10 +2389,10 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
-        Zero,
-        false
+        Foam::zero{},
+        false  // syncPar
     );
 
     // Add the new patches
@@ -2559,7 +2559,7 @@ int main(int argc, char *argv[])
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         extruder.cellToFaceMap()
     );
@@ -2575,7 +2575,7 @@ int main(int argc, char *argv[])
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         extruder.faceToFaceMap()
     );
@@ -2592,7 +2592,7 @@ int main(int argc, char *argv[])
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         extruder.faceToEdgeMap()
     );
@@ -2609,7 +2609,7 @@ int main(int argc, char *argv[])
             regionMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         extruder.pointToPointMap()
     );
diff --git a/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshApp.C b/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshApp.C
index 7b235d8c48..a469731d12 100644
--- a/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshApp.C
+++ b/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshApp.C
@@ -153,7 +153,7 @@ int main(int argc, char *argv[])
             runTimeExtruded,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -204,7 +204,7 @@ int main(int argc, char *argv[])
                 runTimeExtruded,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             std::move(poly2DMesh.points()),
             std::move(poly2DMesh.faces()),
diff --git a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecomposition.C b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecomposition.C
index 3589c67ba8..d2e9024d75 100644
--- a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecomposition.C
+++ b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecomposition.C
@@ -726,7 +726,7 @@ Foam::backgroundMeshDecomposition::backgroundMeshDecomposition
             runTime_,
             IOobject::MUST_READ,
             IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     meshCutter_
diff --git a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellShapeControlMesh/cellShapeControlMesh.C b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellShapeControlMesh/cellShapeControlMesh.C
index ab7bf54aad..3df705a82c 100644
--- a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellShapeControlMesh/cellShapeControlMesh.C
+++ b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellShapeControlMesh/cellShapeControlMesh.C
@@ -387,7 +387,7 @@ Foam::cellShapeControlMesh::cellShapeControlMesh(const Time& runTime)
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
 
             if (io.typeHeaderOk<pointScalarField>(true))
@@ -404,7 +404,7 @@ Foam::cellShapeControlMesh::cellShapeControlMesh(const Time& runTime)
                         mesh.time(),
                         IOobject::MUST_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     )
                 );
 
diff --git a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellSizeAndAlignmentControl/fileControl/fileControl.C b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellSizeAndAlignmentControl/fileControl/fileControl.C
index 93381d0b3e..08f8cb4046 100644
--- a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellSizeAndAlignmentControl/fileControl/fileControl.C
+++ b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/cellShapeControl/cellSizeAndAlignmentControl/fileControl/fileControl.C
@@ -176,55 +176,43 @@ void Foam::fileControl::initialVertices
 {
     Info<< "    Reading points from file     : " << pointsFile_ << endl;
 
-    pointIOField pointsTmp
+    pts = pointIOField::readContents
     (
         IOobject
         (
             pointsFile_,
             runTime_.constant(),
             runTime_,
-            IOobject::MUST_READ,
-            IOobject::NO_WRITE,
-            false
+            IOobject::MUST_READ
         )
     );
 
-    pts.transfer(pointsTmp);
-
     Info<< "    Reading sizes from file      : " << sizesFile_ << endl;
 
-    scalarIOField sizesTmp
+    sizes = scalarIOField::readContents
     (
         IOobject
         (
             sizesFile_,
             runTime_.constant(),
             runTime_,
-            IOobject::MUST_READ,
-            IOobject::NO_WRITE,
-            false
+            IOobject::MUST_READ
         )
     );
 
-    sizes.transfer(sizesTmp);
-
     Info<< "    Reading alignments from file : " << alignmentsFile_ << endl;
 
-    triadIOField alignmentsTmp
+    alignments = triadIOField::readContents
     (
         IOobject
         (
             alignmentsFile_,
             runTime_.constant(),
             runTime_,
-            IOobject::MUST_READ,
-            IOobject::NO_WRITE,
-            false
+            IOobject::MUST_READ
         )
     );
 
-    alignments.transfer(alignmentsTmp);
-
     if ((pts.size() != sizes.size()) || (pts.size() != alignments.size()))
     {
         FatalErrorInFunction
diff --git a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshIO.C b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshIO.C
index 150262b2aa..02de7ee380 100644
--- a/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshIO.C
+++ b/applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshIO.C
@@ -299,8 +299,8 @@ void Foam::conformalVoronoiMesh::writeMesh(const fileName& instance)
 //                "tetDualMesh"/polyMesh::meshSubDir,
 //                runTime_,
 //                IOobject::NO_READ,
-//                IOobject::AUTO_WRITE,
-//                false
+//                IOobject::NO_WRITE,
+//                IOobject::NO_REGISTER
 //            ),
 //            labelUIndList
 //            (
@@ -346,8 +346,8 @@ void Foam::conformalVoronoiMesh::writeMesh(const fileName& instance)
 //                    "tetDualMesh"/polyMesh::meshSubDir,
 //                    runTime_,
 //                    IOobject::NO_READ,
-//                    IOobject::AUTO_WRITE,
-//                    false
+//                    IOobject::NO_WRITE,
+//                    IOobject::NO_REGISTER
 //                ),
 //                points
 //            );
@@ -605,7 +605,7 @@ void Foam::conformalVoronoiMesh::reorderProcessorPatches
                 runTime_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             patchNames,
             patchDicts
diff --git a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshBackgroundMesh/foamyHexMeshBackgroundMesh.C b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshBackgroundMesh/foamyHexMeshBackgroundMesh.C
index add0d3c80f..b17e8c7c26 100644
--- a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshBackgroundMesh/foamyHexMeshBackgroundMesh.C
+++ b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshBackgroundMesh/foamyHexMeshBackgroundMesh.C
@@ -603,7 +603,7 @@ int main(int argc, char *argv[])
                 fvm.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvm,
             dimensionedScalar(dimLength, Zero)
@@ -668,7 +668,7 @@ int main(int argc, char *argv[])
                 fvm.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pointMesh::New(fvm),
             dimensionedScalar(dimLength, Zero)
diff --git a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify.C b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify.C
index 2a355d70c1..05ab5e6714 100644
--- a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify.C
+++ b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify.C
@@ -619,8 +619,8 @@ int main(int argc, char *argv[])
                 "triSurface",
                 runTime,            // registry
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             s
         );
diff --git a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify_non_octree.C b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify_non_octree.C
index 442c83c700..e8f565ba51 100644
--- a/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify_non_octree.C
+++ b/applications/utilities/mesh/generation/foamyMesh/foamyHexMeshSurfaceSimplify/foamyHexMeshSurfaceSimplify_non_octree.C
@@ -327,8 +327,8 @@ int main(int argc, char *argv[])
                 "triSurface",
                 runTime,            // registry
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             s
         );
diff --git a/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMesh.C b/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMesh.C
index cc27297870..861db5e472 100644
--- a/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMesh.C
+++ b/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMesh.C
@@ -158,7 +158,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         std::move(poly2DMesh.points()),
         std::move(poly2DMesh.faces()),
diff --git a/applications/utilities/mesh/manipulation/checkMesh/writeFields.C b/applications/utilities/mesh/manipulation/checkMesh/writeFields.C
index 94dccc6712..690fba9c5e 100644
--- a/applications/utilities/mesh/manipulation/checkMesh/writeFields.C
+++ b/applications/utilities/mesh/manipulation/checkMesh/writeFields.C
@@ -134,8 +134,8 @@ void writeSurfaceField
             mesh.time().timeName(),
             mesh,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_WRITE,
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, Zero),
@@ -193,8 +193,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -227,8 +227,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -279,8 +279,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -316,8 +316,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -351,8 +351,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -386,8 +386,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -416,8 +416,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -445,8 +445,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimVolume, Zero),
@@ -476,8 +476,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -511,8 +511,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar("minTetVolume", dimless, GREAT),
@@ -577,8 +577,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar("minPyrVolume", dimless, GREAT),
@@ -650,8 +650,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -701,8 +701,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(scalar(-1)),
@@ -740,8 +740,8 @@ void Foam::writeFields
                 mesh.time().timeName(),
                 mesh,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(scalar(-1)),
diff --git a/applications/utilities/mesh/manipulation/flattenMesh/flattenMesh.C b/applications/utilities/mesh/manipulation/flattenMesh/flattenMesh.C
index 7e1ded5c6b..c9fe1967d8 100644
--- a/applications/utilities/mesh/manipulation/flattenMesh/flattenMesh.C
+++ b/applications/utilities/mesh/manipulation/flattenMesh/flattenMesh.C
@@ -65,7 +65,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C b/applications/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C
index 978cb86662..126a03e2a9 100644
--- a/applications/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C
+++ b/applications/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C
@@ -90,7 +90,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/utilities/mesh/manipulation/renumberMesh/renumberMesh.C b/applications/utilities/mesh/manipulation/renumberMesh/renumberMesh.C
index e15c5f84fb..48c28c3ce3 100644
--- a/applications/utilities/mesh/manipulation/renumberMesh/renumberMesh.C
+++ b/applications/utilities/mesh/manipulation/renumberMesh/renumberMesh.C
@@ -73,7 +73,7 @@ tmp<volScalarField> createScalarField
 (
     const fvMesh& mesh,
     const word& name,
-    const labelList& elems
+    const labelUList& elems
 )
 {
     tmp<volScalarField> tfld
@@ -87,7 +87,7 @@ tmp<volScalarField> createScalarField
                 mesh,
                 IOobject::NO_READ,
                 IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -1343,7 +1343,7 @@ int main(int argc, char *argv[])
                 mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
         refData.updateMesh(map());
@@ -1387,7 +1387,7 @@ int main(int argc, char *argv[])
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 map().cellMap()
             ).write();
@@ -1402,7 +1402,7 @@ int main(int argc, char *argv[])
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 map().faceMap()
             ).write();
@@ -1417,7 +1417,7 @@ int main(int argc, char *argv[])
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 map().pointMap()
             ).write();
diff --git a/applications/utilities/mesh/manipulation/rotateMesh/rotateMesh.C b/applications/utilities/mesh/manipulation/rotateMesh/rotateMesh.C
index d2e53138ea..19405995ef 100644
--- a/applications/utilities/mesh/manipulation/rotateMesh/rotateMesh.C
+++ b/applications/utilities/mesh/manipulation/rotateMesh/rotateMesh.C
@@ -150,7 +150,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/utilities/mesh/manipulation/splitMeshRegions/splitMeshRegions.C b/applications/utilities/mesh/manipulation/splitMeshRegions/splitMeshRegions.C
index f902ff600f..13667b2a23 100644
--- a/applications/utilities/mesh/manipulation/splitMeshRegions/splitMeshRegions.C
+++ b/applications/utilities/mesh/manipulation/splitMeshRegions/splitMeshRegions.C
@@ -913,7 +913,7 @@ void createAndWriteRegion
             newMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         map().pointMap()
     );
@@ -932,7 +932,7 @@ void createAndWriteRegion
             newMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         newMesh().nFaces()
     );
@@ -970,7 +970,7 @@ void createAndWriteRegion
             newMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         map().cellMap()
     );
@@ -989,7 +989,7 @@ void createAndWriteRegion
             newMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         labelList(nNewPatches, -1)
     );
@@ -1409,7 +1409,7 @@ void writeCellToRegion(const fvMesh& mesh, const labelList& cellRegion)
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             cellRegion
         );
@@ -1429,7 +1429,7 @@ void writeCellToRegion(const fvMesh& mesh, const labelList& cellRegion)
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimless, Zero),
@@ -1716,7 +1716,7 @@ int main(int argc, char *argv[])
                 mesh,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh
         );
diff --git a/applications/utilities/mesh/manipulation/transformPoints/transformPoints.C b/applications/utilities/mesh/manipulation/transformPoints/transformPoints.C
index 0e96f21c30..05335a7f32 100644
--- a/applications/utilities/mesh/manipulation/transformPoints/transformPoints.C
+++ b/applications/utilities/mesh/manipulation/transformPoints/transformPoints.C
@@ -414,7 +414,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/utilities/miscellaneous/foamFormatConvert/foamFormatConvert.C b/applications/utilities/miscellaneous/foamFormatConvert/foamFormatConvert.C
index d45307c33e..45734f1ef5 100644
--- a/applications/utilities/miscellaneous/foamFormatConvert/foamFormatConvert.C
+++ b/applications/utilities/miscellaneous/foamFormatConvert/foamFormatConvert.C
@@ -106,7 +106,7 @@ bool writeZones
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     bool writeOk = false;
@@ -214,7 +214,7 @@ bool writeOptionalMeshObject
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     bool writeOk = false;
diff --git a/applications/utilities/miscellaneous/foamFormatConvert/writeMeshObject.H b/applications/utilities/miscellaneous/foamFormatConvert/writeMeshObject.H
index cff97e5454..7dffa76576 100644
--- a/applications/utilities/miscellaneous/foamFormatConvert/writeMeshObject.H
+++ b/applications/utilities/miscellaneous/foamFormatConvert/writeMeshObject.H
@@ -31,8 +31,8 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef writeMeshObject_H
-#define writeMeshObject_H
+#ifndef Foam_writeMeshObject_H
+#define Foam_writeMeshObject_H
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -59,7 +59,7 @@ inline bool writeMeshObject
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     bool writeOk = false;
diff --git a/applications/utilities/miscellaneous/foamHelp/helpTypes/helpBoundary/helpBoundaryTemplates.C b/applications/utilities/miscellaneous/foamHelp/helpTypes/helpBoundary/helpBoundaryTemplates.C
index 9e2faa1794..9a51d225f7 100644
--- a/applications/utilities/miscellaneous/foamHelp/helpTypes/helpBoundary/helpBoundaryTemplates.C
+++ b/applications/utilities/miscellaneous/foamHelp/helpTypes/helpBoundary/helpBoundaryTemplates.C
@@ -94,7 +94,7 @@ void Foam::helpTypes::helpBoundary::fixedValueFieldConditions
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensioned<Type>(dimless, Zero)
diff --git a/applications/utilities/parallelProcessing/decomposePar/decomposePar.C b/applications/utilities/parallelProcessing/decomposePar/decomposePar.C
index f8bdc64af5..8916b01f6f 100644
--- a/applications/utilities/parallelProcessing/decomposePar/decomposePar.C
+++ b/applications/utilities/parallelProcessing/decomposePar/decomposePar.C
@@ -189,7 +189,7 @@ autoPtr<labelIOList> procAddressing
             procMesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false  // do not register
+            IOobject::NO_REGISTER
         )
     );
 }
@@ -505,7 +505,7 @@ int main(int argc, char *argv[])
                     runTime,
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 decompDictFile,
                 args.getOrDefault<label>("domains", 0),
@@ -543,7 +543,7 @@ int main(int argc, char *argv[])
                         runTime,
                         IOobject::MUST_READ,
                         IOobject::NO_WRITE,
-                        false       // do not register
+                        IOobject::NO_REGISTER
                     ),
                     decompDictFile
                 )
@@ -653,7 +653,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             decompDictFile
         );
@@ -683,7 +683,7 @@ int main(int argc, char *argv[])
                         mesh,
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     procIds
                 );
@@ -816,7 +816,7 @@ int main(int argc, char *argv[])
                         mesh,
                         IOobject::READ_IF_PRESENT,
                         IOobject::NO_WRITE,
-                        false  // not registered
+                        IOobject::NO_REGISTER
                     );
 
                     if (io.typeHeaderOk<faBoundaryMesh>(true))
diff --git a/applications/utilities/parallelProcessing/decomposePar/domainDecomposition.C b/applications/utilities/parallelProcessing/decomposePar/domainDecomposition.C
index 5efad485c8..5a72003470 100644
--- a/applications/utilities/parallelProcessing/decomposePar/domainDecomposition.C
+++ b/applications/utilities/parallelProcessing/decomposePar/domainDecomposition.C
@@ -91,7 +91,7 @@ Foam::domainDecomposition::domainDecomposition
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
       : nullptr
@@ -221,7 +221,7 @@ bool Foam::domainDecomposition::writeDecomposition(const bool decomposeSets)
             *this,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -767,7 +767,7 @@ bool Foam::domainDecomposition::writeDecomposition(const bool decomposeSets)
                     procMesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 std::move(procPoints)
             );
@@ -831,7 +831,7 @@ bool Foam::domainDecomposition::writeDecomposition(const bool decomposeSets)
                 procMesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             baseMeshData,
             procCellAddressing_[proci],
@@ -907,7 +907,7 @@ bool Foam::domainDecomposition::writeDecomposition(const bool decomposeSets)
             procMesh.thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false  // not registered
+            IOobject::NO_REGISTER
         );
 
         // pointProcAddressing
diff --git a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRun.C b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRun.C
index 060ad804e8..c80f791515 100644
--- a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRun.C
+++ b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRun.C
@@ -153,7 +153,7 @@ void Foam::domainDecompositionDryRun::execute
 //                mesh_,
 //                IOobject::NO_READ,
 //                IOobject::NO_WRITE,
-//                false
+//                IOobject::NO_REGISTER
 //            ),
 //            std::move(cellToProc)
 //        );
diff --git a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRunWrite.C b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRunWrite.C
index e7b4ad0d7d..3d0cae7c28 100644
--- a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRunWrite.C
+++ b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionDryRunWrite.C
@@ -48,7 +48,7 @@ void Foam::domainDecompositionDryRun::writeVolField
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh(),
         dimensionedScalar("cellDist", dimless, -1),
diff --git a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionWrite.C b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionWrite.C
index 81cf5088e2..8b432d5032 100644
--- a/applications/utilities/parallelProcessing/decomposePar/domainDecompositionWrite.C
+++ b/applications/utilities/parallelProcessing/decomposePar/domainDecompositionWrite.C
@@ -49,7 +49,7 @@ void Foam::domainDecomposition::writeVolField
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh(),
         dimensionedScalar("cellDist", dimless, -1),
diff --git a/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C b/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
index da63e26e21..2ab54d02bd 100644
--- a/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
+++ b/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
@@ -780,7 +780,7 @@ int main(int argc, char *argv[])
                                 procMesh,
                                 IOobject::READ_IF_PRESENT,
                                 IOobject::NO_WRITE,
-                                false
+                                IOobject::NO_REGISTER
                             )
                         )
                     );
@@ -822,7 +822,7 @@ int main(int argc, char *argv[])
                         mesh,
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     cellMaps,
                     pointMaps,
@@ -853,7 +853,7 @@ int main(int argc, char *argv[])
                                 procMesh,
                                 IOobject::READ_IF_PRESENT,
                                 IOobject::NO_WRITE,
-                                false
+                                IOobject::NO_REGISTER
                             )
                         )
                     );
@@ -895,7 +895,7 @@ int main(int argc, char *argv[])
                         mesh,
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     cellMaps,
                     pointMaps,
diff --git a/applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C b/applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C
index 8a680c3dd9..9223893474 100644
--- a/applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C
+++ b/applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C
@@ -353,7 +353,7 @@ boundBox procBounds
                 procDb,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -382,7 +382,7 @@ void writeDistribution
             masterMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         masterMesh.nCells()
     );
@@ -418,7 +418,7 @@ void writeDistribution
                 masterMesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             masterMesh,
             dimensionedScalar("cellDist", dimless, -1),
@@ -498,7 +498,7 @@ void writeMaps
         procMesh,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false                       // Do not register
+        IOobject::NO_REGISTER
     );
 
 
diff --git a/applications/utilities/parallelProcessing/redistributePar/parLagrangianDistributorTemplates.C b/applications/utilities/parallelProcessing/redistributePar/parLagrangianDistributorTemplates.C
index 401456f0d6..6bfb38094c 100644
--- a/applications/utilities/parallelProcessing/redistributePar/parLagrangianDistributorTemplates.C
+++ b/applications/utilities/parallelProcessing/redistributePar/parLagrangianDistributorTemplates.C
@@ -114,7 +114,7 @@ Foam::label Foam::parLagrangianDistributor::distributeFields
                 srcMesh_,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             label(0)
         );
@@ -130,7 +130,7 @@ Foam::label Foam::parLagrangianDistributor::distributeFields
             tgtMesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (field.size())
@@ -218,7 +218,7 @@ Foam::label Foam::parLagrangianDistributor::distributeFieldFields
                 srcMesh_,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             label(0)
         );
@@ -235,7 +235,7 @@ Foam::label Foam::parLagrangianDistributor::distributeFieldFields
             tgtMesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (field.size())
@@ -363,7 +363,7 @@ Foam::label Foam::parLagrangianDistributor::distributeStoredFields
             tgtMesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (field.size())
diff --git a/applications/utilities/parallelProcessing/redistributePar/redistributePar.C b/applications/utilities/parallelProcessing/redistributePar/redistributePar.C
index 0ce18f312e..5f960cf1a4 100644
--- a/applications/utilities/parallelProcessing/redistributePar/redistributePar.C
+++ b/applications/utilities/parallelProcessing/redistributePar/redistributePar.C
@@ -397,7 +397,7 @@ void writeDecomposition
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         decomp
     );
@@ -415,7 +415,7 @@ void writeDecomposition
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false                   // do not register
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(name, dimless, -1),
@@ -891,7 +891,7 @@ autoPtr<mapDistributePolyMesh> redistributeAndWrite
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         hexRef8Data refData(io);
@@ -2592,7 +2592,7 @@ int main(int argc, char *argv[])
                             areaProcMeshPtr->thisDb(),
                             IOobject::NO_READ,
                             IOobject::NO_WRITE,
-                            false
+                            IOobject::NO_REGISTER
                         ),
                         faDistMap
                     ).write();
diff --git a/applications/utilities/postProcessing/dataConversion/foamToEnsight/checkMeshMoving.H b/applications/utilities/postProcessing/dataConversion/foamToEnsight/checkMeshMoving.H
index cbd5f35cd4..a1d4550002 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToEnsight/checkMeshMoving.H
+++ b/applications/utilities/postProcessing/dataConversion/foamToEnsight/checkMeshMoving.H
@@ -49,7 +49,7 @@ if (timeDirs.size() > 1)
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false  // no register
+                    IOobject::NO_REGISTER
                 ).typeHeaderOk<pointIOField>(true, false)
             )
             {
diff --git a/applications/utilities/postProcessing/dataConversion/foamToEnsight/getTimeIndex.H b/applications/utilities/postProcessing/dataConversion/foamToEnsight/getTimeIndex.H
index f27848bf92..5fa3c329c1 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToEnsight/getTimeIndex.H
+++ b/applications/utilities/postProcessing/dataConversion/foamToEnsight/getTimeIndex.H
@@ -42,7 +42,7 @@ label timeIndex = 0;
             runTime,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false   // no register
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOdictionary>(true, false))
diff --git a/applications/utilities/postProcessing/dataConversion/foamToEnsight/readFields.C b/applications/utilities/postProcessing/dataConversion/foamToEnsight/readFields.C
index 6977d8bf58..a9e92f80ad 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToEnsight/readFields.C
+++ b/applications/utilities/postProcessing/dataConversion/foamToEnsight/readFields.C
@@ -55,7 +55,7 @@ Foam::label Foam::checkData
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false  // no register
+                    IOobject::NO_REGISTER
                 ).typeHeaderOk<volScalarField>(false, false);
 
             if (!good)
diff --git a/applications/utilities/postProcessing/dataConversion/foamToGMV/moveMesh.H b/applications/utilities/postProcessing/dataConversion/foamToGMV/moveMesh.H
index 11f692b684..b9eeb6f341 100644
--- a/applications/utilities/postProcessing/dataConversion/foamToGMV/moveMesh.H
+++ b/applications/utilities/postProcessing/dataConversion/foamToGMV/moveMesh.H
@@ -7,7 +7,7 @@
         mesh,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false  // no register
+        IOobject::NO_REGISTER
     );
 
     if (io.typeHeaderOk<pointIOField>(true, false))
diff --git a/applications/utilities/postProcessing/miscellaneous/profilingSummary/profilingSummary.C b/applications/utilities/postProcessing/miscellaneous/profilingSummary/profilingSummary.C
index c2d0a56a37..da3e60947a 100644
--- a/applications/utilities/postProcessing/miscellaneous/profilingSummary/profilingSummary.C
+++ b/applications/utilities/postProcessing/miscellaneous/profilingSummary/profilingSummary.C
@@ -211,7 +211,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false, // no register
+                IOobject::NO_REGISTER,
                 true   // global-like
             )
         );
diff --git a/applications/utilities/postProcessing/miscellaneous/temporalInterpolate/temporalInterpolate.C b/applications/utilities/postProcessing/miscellaneous/temporalInterpolate/temporalInterpolate.C
index be8f32bced..3fcff80021 100644
--- a/applications/utilities/postProcessing/miscellaneous/temporalInterpolate/temporalInterpolate.C
+++ b/applications/utilities/postProcessing/miscellaneous/temporalInterpolate/temporalInterpolate.C
@@ -169,7 +169,7 @@ void fieldInterpolator::interpolate()
                         objects_[fieldName]->db(),
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     fieldName,
                     selectedTimeNames,
diff --git a/applications/utilities/postProcessing/optimisation/cumulativeDisplacement/createFields.H b/applications/utilities/postProcessing/optimisation/cumulativeDisplacement/createFields.H
index 0fee3dd334..759fbf29bc 100644
--- a/applications/utilities/postProcessing/optimisation/cumulativeDisplacement/createFields.H
+++ b/applications/utilities/postProcessing/optimisation/cumulativeDisplacement/createFields.H
@@ -10,7 +10,7 @@
                 mesh,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
     );
diff --git a/applications/utilities/preProcessing/applyBoundaryLayer/applyBoundaryLayer.C b/applications/utilities/preProcessing/applyBoundaryLayer/applyBoundaryLayer.C
index c072c06826..06b6275fa8 100644
--- a/applications/utilities/preProcessing/applyBoundaryLayer/applyBoundaryLayer.C
+++ b/applications/utilities/preProcessing/applyBoundaryLayer/applyBoundaryLayer.C
@@ -84,7 +84,7 @@ void blendField
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (fieldHeader.typeHeaderOk<volScalarField>(true))
@@ -122,7 +122,7 @@ void calcOmegaField
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (omegaHeader.typeHeaderOk<volScalarField>(true))
@@ -159,7 +159,7 @@ void setField
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (fldHeader.typeHeaderOk<volScalarField>(true))
diff --git a/applications/utilities/preProcessing/changeDictionary/changeDictionary.C b/applications/utilities/preProcessing/changeDictionary/changeDictionary.C
index c1aaf562c2..bf9ba8911a 100644
--- a/applications/utilities/preProcessing/changeDictionary/changeDictionary.C
+++ b/applications/utilities/preProcessing/changeDictionary/changeDictionary.C
@@ -548,7 +548,7 @@ int main(int argc, char *argv[])
                 mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
         const_cast<word&>(IOPtrList<entry>::typeName) = oldTypeName;
@@ -672,7 +672,7 @@ int main(int argc, char *argv[])
                     mesh,
                     IOobject::MUST_READ_IF_MODIFIED,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 );
 
                 if (fieldHeader.typeHeaderOk<localIOdictionary>(false))
diff --git a/applications/utilities/preProcessing/createZeroDirectory/boundaryInfo.C b/applications/utilities/preProcessing/createZeroDirectory/boundaryInfo.C
index c9a11c870a..3be107a0da 100644
--- a/applications/utilities/preProcessing/createZeroDirectory/boundaryInfo.C
+++ b/applications/utilities/preProcessing/createZeroDirectory/boundaryInfo.C
@@ -59,7 +59,7 @@ Foam::IOPtrList<Foam::entry> Foam::boundaryInfo::readBoundaryDict
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -75,8 +75,7 @@ Foam::IOPtrList<Foam::entry> Foam::boundaryInfo::readBoundaryDict
         if (!procPatch)
         {
             label nFaces = dict.get<label>("nFaces");
-            reduce(nFaces, sumOp<label>());
-            if (nFaces == 0)
+            if (returnReduceAnd(nFaces == 0))
             {
                 addPatch = false;
             }
diff --git a/applications/utilities/preProcessing/createZeroDirectory/solverTemplate.C b/applications/utilities/preProcessing/createZeroDirectory/solverTemplate.C
index 2d8a64cd20..a49c975bae 100644
--- a/applications/utilities/preProcessing/createZeroDirectory/solverTemplate.C
+++ b/applications/utilities/preProcessing/createZeroDirectory/solverTemplate.C
@@ -108,7 +108,7 @@ Foam::dictionary Foam::solverTemplate::readFluidFieldTemplates
                     runTime,
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 )
             );
 
diff --git a/applications/utilities/preProcessing/faceAgglomerate/faceAgglomerate.C b/applications/utilities/preProcessing/faceAgglomerate/faceAgglomerate.C
index bf18cdaae8..0ea21872f4 100644
--- a/applications/utilities/preProcessing/faceAgglomerate/faceAgglomerate.C
+++ b/applications/utilities/preProcessing/faceAgglomerate/faceAgglomerate.C
@@ -89,7 +89,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         boundary.size()
     );
diff --git a/applications/utilities/preProcessing/foamUpgradeCyclics/foamUpgradeCyclics.C b/applications/utilities/preProcessing/foamUpgradeCyclics/foamUpgradeCyclics.C
index f4fd3589a3..f1c9fca80a 100644
--- a/applications/utilities/preProcessing/foamUpgradeCyclics/foamUpgradeCyclics.C
+++ b/applications/utilities/preProcessing/foamUpgradeCyclics/foamUpgradeCyclics.C
@@ -287,7 +287,7 @@ void rewriteField
             runTime,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
     const_cast<word&>(IOdictionary::typeName) = oldTypeName;
@@ -455,7 +455,7 @@ int main(int argc, char *argv[])
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (io.typeHeaderOk<IOPtrList<entry>>(false))
@@ -489,7 +489,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (io.typeHeaderOk<IOPtrList<entry>>(false))
diff --git a/applications/utilities/preProcessing/mapFields/MapLagrangianFields.H b/applications/utilities/preProcessing/mapFields/MapLagrangianFields.H
index 285f80f411..d62f4256a8 100644
--- a/applications/utilities/preProcessing/mapFields/MapLagrangianFields.H
+++ b/applications/utilities/preProcessing/mapFields/MapLagrangianFields.H
@@ -82,7 +82,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 addParticles.size()
             );
@@ -121,7 +121,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 addParticles.size()
             );
@@ -159,7 +159,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 addParticles.size()
             );
diff --git a/applications/utilities/preProcessing/mapFields/mapFields.C b/applications/utilities/preProcessing/mapFields/mapFields.C
index 8b5b24dd29..ef9ff31580 100644
--- a/applications/utilities/preProcessing/mapFields/mapFields.C
+++ b/applications/utilities/preProcessing/mapFields/mapFields.C
@@ -67,7 +67,7 @@ int readNumProcs
                     runTime,
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false // do not register
+                    IOobject::NO_REGISTER
                 ),
                 args.getOrDefault<fileName>(optionName, "")
             )
@@ -360,7 +360,7 @@ int main(int argc, char *argv[])
                 runTimeTarget,
                 IOobject::MUST_READ_IF_MODIFIED,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/utilities/preProcessing/mapFieldsPar/MapLagrangianFields.H b/applications/utilities/preProcessing/mapFieldsPar/MapLagrangianFields.H
index 18cba7b9ec..7f142c0221 100644
--- a/applications/utilities/preProcessing/mapFieldsPar/MapLagrangianFields.H
+++ b/applications/utilities/preProcessing/mapFieldsPar/MapLagrangianFields.H
@@ -81,7 +81,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 addParticles.size()
             );
@@ -123,7 +123,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 min(fieldSource.size(), addParticles.size()) // handle 0 size
             );
@@ -172,7 +172,7 @@ void MapLagrangianFields
                     meshTarget,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 min(fieldSource.size(), addParticles.size()) // handle 0 size
             );
diff --git a/applications/utilities/preProcessing/mapFieldsPar/mapFieldsPar.C b/applications/utilities/preProcessing/mapFieldsPar/mapFieldsPar.C
index cb610d4549..09c61e1f1b 100644
--- a/applications/utilities/preProcessing/mapFieldsPar/mapFieldsPar.C
+++ b/applications/utilities/preProcessing/mapFieldsPar/mapFieldsPar.C
@@ -313,7 +313,7 @@ int main(int argc, char *argv[])
                 runTimeTarget,
                 IOobject::MUST_READ_IF_MODIFIED,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/applications/utilities/preProcessing/mdInitialise/mdInitialise.C b/applications/utilities/preProcessing/mdInitialise/mdInitialise.C
index 57d8196344..573e002931 100644
--- a/applications/utilities/preProcessing/mdInitialise/mdInitialise.C
+++ b/applications/utilities/preProcessing/mdInitialise/mdInitialise.C
@@ -58,7 +58,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/applications/utilities/preProcessing/optimisation/writeMorpherCPs/writeMorpherCPs.C b/applications/utilities/preProcessing/optimisation/writeMorpherCPs/writeMorpherCPs.C
index 27bbec71d7..905915f859 100644
--- a/applications/utilities/preProcessing/optimisation/writeMorpherCPs/writeMorpherCPs.C
+++ b/applications/utilities/preProcessing/optimisation/writeMorpherCPs/writeMorpherCPs.C
@@ -47,16 +47,14 @@ int main(int argc, char *argv[])
 
     const dictionary NURBSdict
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 mesh.time().constant(),
                 mesh,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::NO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).subDict("volumetricBSplinesMotionSolverCoeffs")
     );
diff --git a/applications/utilities/preProcessing/setExprBoundaryFields/setExprBoundaryFields.C b/applications/utilities/preProcessing/setExprBoundaryFields/setExprBoundaryFields.C
index 588cc1e453..74355c2df8 100644
--- a/applications/utilities/preProcessing/setExprBoundaryFields/setExprBoundaryFields.C
+++ b/applications/utilities/preProcessing/setExprBoundaryFields/setExprBoundaryFields.C
@@ -197,7 +197,7 @@ int main(int argc, char *argv[])
                 mesh.thisDb(),
                 IOobject::MUST_READ_IF_MODIFIED,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
 
             const bool headOk = fieldHeader.typeHeaderOk<IOdictionary>(false);
diff --git a/applications/utilities/preProcessing/setExprFields/setExprFields.C b/applications/utilities/preProcessing/setExprFields/setExprFields.C
index 2d493cd022..9704b34ab0 100644
--- a/applications/utilities/preProcessing/setExprFields/setExprFields.C
+++ b/applications/utilities/preProcessing/setExprFields/setExprFields.C
@@ -163,7 +163,7 @@ bool setField
                 mesh.thisDb(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false  // No register
+                IOobject::NO_REGISTER
             ),
             mesh
         );
diff --git a/applications/utilities/preProcessing/setTurbulenceFields/setTurbulenceFields.C b/applications/utilities/preProcessing/setTurbulenceFields/setTurbulenceFields.C
index 71d945503a..b274677ed6 100644
--- a/applications/utilities/preProcessing/setTurbulenceFields/setTurbulenceFields.C
+++ b/applications/utilities/preProcessing/setTurbulenceFields/setTurbulenceFields.C
@@ -148,7 +148,7 @@ IOobject createIOobject
             mesh,
             rOpt,
             IOobject::NO_WRITE,
-            false // do not register
+            IOobject::NO_REGISTER
         );
 }
 
@@ -377,7 +377,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false  // do not register
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, scalar(1)),
diff --git a/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C b/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
index 69fad1c6d1..c8b74c6b42 100644
--- a/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
+++ b/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
@@ -480,7 +480,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -824,7 +824,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         nCoarseFaces
     );
@@ -1273,7 +1273,7 @@ int main(int argc, char *argv[])
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         std::move(globalFaceFaces)
     );
diff --git a/applications/utilities/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C b/applications/utilities/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C
index e44dfd6fcb..5cc5d909e5 100644
--- a/applications/utilities/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C
+++ b/applications/utilities/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C
@@ -1811,7 +1811,7 @@ int main(int argc, char *argv[])
                 runTime,                    // registry
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             feMesh.points(),
             feMesh.edges()
diff --git a/applications/utilities/surface/surfaceFeatureExtract/surfaceFeatureExtract.C b/applications/utilities/surface/surfaceFeatureExtract/surfaceFeatureExtract.C
index 6b70328df7..f7c45eddcf 100644
--- a/applications/utilities/surface/surfaceFeatureExtract/surfaceFeatureExtract.C
+++ b/applications/utilities/surface/surfaceFeatureExtract/surfaceFeatureExtract.C
@@ -639,8 +639,8 @@ int main(int argc, char *argv[])
                     "triSurface",
                     runTime,                    // registry
                     IOobject::NO_READ,
-                    IOobject::AUTO_WRITE,
-                    false
+                    IOobject::NO_WRITE,
+                    IOobject::NO_REGISTER
                 ),
                 feMesh.points(),
                 feMesh.edges()
diff --git a/applications/utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C b/applications/utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C
index a76ab2af02..3b81e3545a 100644
--- a/applications/utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C
+++ b/applications/utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C
@@ -228,7 +228,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             args.getOrDefault<fileName>("dict", "")
         );
diff --git a/applications/utilities/surface/surfaceMeshExport/surfaceMeshExport.C b/applications/utilities/surface/surfaceMeshExport/surfaceMeshExport.C
index cc9b33e51e..260ae19217 100644
--- a/applications/utilities/surface/surfaceMeshExport/surfaceMeshExport.C
+++ b/applications/utilities/surface/surfaceMeshExport/surfaceMeshExport.C
@@ -188,7 +188,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             args.getOrDefault<fileName>("dict", "")
         );
diff --git a/applications/utilities/surface/surfaceMeshImport/surfaceMeshImport.C b/applications/utilities/surface/surfaceMeshImport/surfaceMeshImport.C
index 702b49b5a4..03cb91a96e 100644
--- a/applications/utilities/surface/surfaceMeshImport/surfaceMeshImport.C
+++ b/applications/utilities/surface/surfaceMeshImport/surfaceMeshImport.C
@@ -200,7 +200,7 @@ int main(int argc, char *argv[])
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             args.getOrDefault<fileName>("dict", "")
         );
diff --git a/applications/utilities/thermophysical/equilibriumCO/equilibriumCO.C b/applications/utilities/thermophysical/equilibriumCO/equilibriumCO.C
index 5816495b30..cb555bcca6 100644
--- a/applications/utilities/thermophysical/equilibriumCO/equilibriumCO.C
+++ b/applications/utilities/thermophysical/equilibriumCO/equilibriumCO.C
@@ -81,12 +81,11 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
 
-
     const scalar P = 1e5;
     const scalar T = 3000.0;
 
diff --git a/src/OpenFOAM/db/regIOobject/regIOobject.H b/src/OpenFOAM/db/regIOobject/regIOobject.H
index f7060a5e7b..bdd4d9ec25 100644
--- a/src/OpenFOAM/db/regIOobject/regIOobject.H
+++ b/src/OpenFOAM/db/regIOobject/regIOobject.H
@@ -147,7 +147,7 @@ public:
         regIOobject(const regIOobject& rio, bool registerCopy);
 
         //- Copy construct with new name, transferring registry registration
-        //- to the copy f registerCopy is true
+        //- to the copy if registerCopy is true
         regIOobject(const word& newName, const regIOobject&, bool registerCopy);
 
         //- Copy construct with new IO parameters
diff --git a/src/TurbulenceModels/turbulenceModels/LES/LESModel/LESModel.C b/src/TurbulenceModels/turbulenceModels/LES/LESModel/LESModel.C
index 1608a5682a..45373c6c60 100644
--- a/src/TurbulenceModels/turbulenceModels/LES/LESModel/LESModel.C
+++ b/src/TurbulenceModels/turbulenceModels/LES/LESModel/LESModel.C
@@ -147,9 +147,9 @@ Foam::LESModel<BasicTurbulenceModel>::New
             IOobject::groupName(propertiesName, alphaRhoPhi.group()),
             U.time().constant(),
             U.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/TurbulenceModels/turbulenceModels/RAS/RASModel/RASModel.C b/src/TurbulenceModels/turbulenceModels/RAS/RASModel/RASModel.C
index 43b5745d88..661f65ebba 100644
--- a/src/TurbulenceModels/turbulenceModels/RAS/RASModel/RASModel.C
+++ b/src/TurbulenceModels/turbulenceModels/RAS/RASModel/RASModel.C
@@ -129,9 +129,9 @@ Foam::RASModel<BasicTurbulenceModel>::New
             IOobject::groupName(propertiesName, alphaRhoPhi.group()),
             U.time().constant(),
             U.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/TurbulenceModels/turbulenceModels/RAS/kEpsilonPhitF/kEpsilonPhitF.C b/src/TurbulenceModels/turbulenceModels/RAS/kEpsilonPhitF/kEpsilonPhitF.C
index 54add60652..c3169d640a 100644
--- a/src/TurbulenceModels/turbulenceModels/RAS/kEpsilonPhitF/kEpsilonPhitF.C
+++ b/src/TurbulenceModels/turbulenceModels/RAS/kEpsilonPhitF/kEpsilonPhitF.C
@@ -304,7 +304,7 @@ kEpsilonPhitF<BasicTurbulenceModel>::kEpsilonPhitF
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(dimTime, Zero)
diff --git a/src/TurbulenceModels/turbulenceModels/TurbulenceModel/TurbulenceModel.C b/src/TurbulenceModels/turbulenceModels/TurbulenceModel/TurbulenceModel.C
index 8400b981c8..d28a9500d6 100644
--- a/src/TurbulenceModels/turbulenceModels/TurbulenceModel/TurbulenceModel.C
+++ b/src/TurbulenceModels/turbulenceModels/TurbulenceModel/TurbulenceModel.C
@@ -95,9 +95,9 @@ Foam::TurbulenceModel<Alpha, Rho, BasicTurbulenceModel, TransportModel>::New
             IOobject::groupName(propertiesName, alphaRhoPhi.group()),
             U.time().constant(),
             U.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/epsilonWallFunctions/epsilonWallFunction/epsilonWallFunctionFvPatchScalarField.C b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/epsilonWallFunctions/epsilonWallFunction/epsilonWallFunctionFvPatchScalarField.C
index ebe1493312..724c4c2ceb 100644
--- a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/epsilonWallFunctions/epsilonWallFunction/epsilonWallFunctionFvPatchScalarField.C
+++ b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/epsilonWallFunctions/epsilonWallFunction/epsilonWallFunctionFvPatchScalarField.C
@@ -91,7 +91,7 @@ void Foam::epsilonWallFunctionFvPatchScalarField::createAveragingWeights()
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false // do not register
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, Zero)
diff --git a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUTabulatedWallFunction/nutUTabulatedWallFunctionFvPatchScalarField.C b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUTabulatedWallFunction/nutUTabulatedWallFunctionFvPatchScalarField.C
index 5281d8159f..bdea7962c8 100644
--- a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUTabulatedWallFunction/nutUTabulatedWallFunctionFvPatchScalarField.C
+++ b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUTabulatedWallFunction/nutUTabulatedWallFunctionFvPatchScalarField.C
@@ -115,7 +115,7 @@ nutUTabulatedWallFunctionFvPatchScalarField
             patch().boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         false
     )
@@ -156,7 +156,7 @@ nutUTabulatedWallFunctionFvPatchScalarField
             patch().boundaryMesh().mesh(),
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         true
     )
diff --git a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.C b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.C
index d38f1632c5..e4c67849be 100644
--- a/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.C
+++ b/src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.C
@@ -91,7 +91,7 @@ void Foam::omegaWallFunctionFvPatchScalarField::createAveragingWeights()
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false // do not register
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, Zero)
diff --git a/src/TurbulenceModels/turbulenceModels/eddyViscosity/eddyViscosity.C b/src/TurbulenceModels/turbulenceModels/eddyViscosity/eddyViscosity.C
index 3986871cfb..ad74cdb688 100644
--- a/src/TurbulenceModels/turbulenceModels/eddyViscosity/eddyViscosity.C
+++ b/src/TurbulenceModels/turbulenceModels/eddyViscosity/eddyViscosity.C
@@ -114,7 +114,7 @@ Foam::eddyViscosity<BasicTurbulenceModel>::R() const
                 this->mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             ((2.0/3.0)*I)*tk() - (nut_)*dev(twoSymm(fvc::grad(this->U_))),
             patchFieldTypes
diff --git a/src/TurbulenceModels/turbulenceModels/laminar/Stokes/Stokes.C b/src/TurbulenceModels/turbulenceModels/laminar/Stokes/Stokes.C
index 04b0a8f683..0e42398ef3 100644
--- a/src/TurbulenceModels/turbulenceModels/laminar/Stokes/Stokes.C
+++ b/src/TurbulenceModels/turbulenceModels/laminar/Stokes/Stokes.C
@@ -98,7 +98,7 @@ Stokes<BasicTurbulenceModel>::nut() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(dimViscosity, Zero)
diff --git a/src/TurbulenceModels/turbulenceModels/laminar/laminarModel/laminarModel.C b/src/TurbulenceModels/turbulenceModels/laminar/laminarModel/laminarModel.C
index 3e9eba5d0f..22e7af0fbc 100644
--- a/src/TurbulenceModels/turbulenceModels/laminar/laminarModel/laminarModel.C
+++ b/src/TurbulenceModels/turbulenceModels/laminar/laminarModel/laminarModel.C
@@ -100,9 +100,9 @@ Foam::laminarModel<BasicTurbulenceModel>::New
             IOobject::groupName(propertiesName, alphaRhoPhi.group()),
             U.time().constant(),
             U.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
@@ -198,7 +198,7 @@ Foam::laminarModel<BasicTurbulenceModel>::nut() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(dimViscosity, Zero)
@@ -258,7 +258,7 @@ Foam::laminarModel<BasicTurbulenceModel>::k() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(sqr(this->U_.dimensions()), Zero)
@@ -279,7 +279,7 @@ Foam::laminarModel<BasicTurbulenceModel>::epsilon() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(sqr(this->U_.dimensions())/dimTime, Zero)
@@ -300,7 +300,7 @@ Foam::laminarModel<BasicTurbulenceModel>::omega() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(dimless/dimTime, Zero)
@@ -321,7 +321,7 @@ Foam::laminarModel<BasicTurbulenceModel>::R() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedSymmTensor(sqr(this->U_.dimensions()), Zero)
diff --git a/src/atmosphericModels/turbulenceModels/RAS/kL/kL.C b/src/atmosphericModels/turbulenceModels/RAS/kL/kL.C
index 0b06f04c14..5f9222a233 100644
--- a/src/atmosphericModels/turbulenceModels/RAS/kL/kL.C
+++ b/src/atmosphericModels/turbulenceModels/RAS/kL/kL.C
@@ -89,7 +89,7 @@ tmp<volScalarField> kL<BasicTurbulenceModel>::epsilonCanopy() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(sqr(dimLength)/pow3(dimTime), Zero)
@@ -136,7 +136,7 @@ tmp<volScalarField> kL<BasicTurbulenceModel>::canopyHeight() const
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensionedScalar(dimLength, Zero)
diff --git a/src/combustionModels/EDC/EDC.C b/src/combustionModels/EDC/EDC.C
index 434a8f87ec..5d22a9f137 100644
--- a/src/combustionModels/EDC/EDC.C
+++ b/src/combustionModels/EDC/EDC.C
@@ -204,7 +204,7 @@ Foam::combustionModels::EDC<ReactionThermo>::Qdot() const
                 this->mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/combustionModels/combustionModel/combustionModelTemplates.C b/src/combustionModels/combustionModel/combustionModelTemplates.C
index a7b2c3737f..6c896b45b9 100644
--- a/src/combustionModels/combustionModel/combustionModelTemplates.C
+++ b/src/combustionModels/combustionModel/combustionModelTemplates.C
@@ -43,7 +43,7 @@ Foam::autoPtr<CombustionModel> Foam::combustionModel::New
         thermo.db(),
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     word combModelName("none");
diff --git a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
index 0ef1a6861e..f14d2ec546 100644
--- a/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
+++ b/src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C
@@ -67,7 +67,7 @@ diffusionMulticomponent<ReactionThermo, ThermoType>::init()
                     this->mesh_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 this->mesh_,
                 dimensionedScalar(dimMass/dimTime/dimVolume, Zero),
@@ -205,7 +205,7 @@ diffusionMulticomponent<ReactionThermo, ThermoType>::correct()
                         this->mesh_,
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     this->mesh_,
                     dimensionedScalar(dimMass/dimTime/dimVolume, Zero),
@@ -406,7 +406,7 @@ diffusionMulticomponent<ReactionThermo, ThermoType>::Qdot() const
                 this->mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimEnergy/dimTime/dimVolume, Zero),
diff --git a/src/combustionModels/laminar/laminar.C b/src/combustionModels/laminar/laminar.C
index 50d724fdd2..50f5681643 100644
--- a/src/combustionModels/laminar/laminar.C
+++ b/src/combustionModels/laminar/laminar.C
@@ -154,7 +154,7 @@ Foam::combustionModels::laminar<ReactionThermo>::Qdot() const
                 this->mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/combustionModels/noCombustion/noCombustion.C b/src/combustionModels/noCombustion/noCombustion.C
index ca210872a4..e123b2f2dd 100644
--- a/src/combustionModels/noCombustion/noCombustion.C
+++ b/src/combustionModels/noCombustion/noCombustion.C
@@ -87,7 +87,7 @@ Foam::combustionModels::noCombustion<ReactionThermo>::Qdot() const
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh(),
         dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/conversion/ccm/reader/ccmReader.C b/src/conversion/ccm/reader/ccmReader.C
index 2cb8e4f47a..fa95289c9e 100644
--- a/src/conversion/ccm/reader/ccmReader.C
+++ b/src/conversion/ccm/reader/ccmReader.C
@@ -608,7 +608,7 @@ bool Foam::ccm::reader::remapMeshInfo
                 registry,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
     }
diff --git a/src/conversion/ccm/reader/ccmReaderAux.C b/src/conversion/ccm/reader/ccmReaderAux.C
index 6e996963f3..3e119be25c 100644
--- a/src/conversion/ccm/reader/ccmReaderAux.C
+++ b/src/conversion/ccm/reader/ccmReaderAux.C
@@ -123,8 +123,8 @@ void Foam::ccm::reader::writeInterfaces
             polyMesh::meshSubDir,
             registry,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_WRITE,
+            IOobject::NO_REGISTER
         )
     );
 
@@ -150,7 +150,7 @@ void Foam::ccm::reader::writeMeshLabelList
 ) const
 {
     // Write constant/polyMesh/propertyName
-    IOList<label> ioObj
+    IOListRef<label> ioObj
     (
         IOobject
         (
@@ -159,8 +159,8 @@ void Foam::ccm::reader::writeMeshLabelList
             polyMesh::meshSubDir,
             registry,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_WRITE,
+            IOobject::NO_REGISTER
         ),
         list
     );
diff --git a/src/conversion/ccm/writer/ccmWriterMesh.C b/src/conversion/ccm/writer/ccmWriterMesh.C
index f66b822712..83fcfafd11 100644
--- a/src/conversion/ccm/writer/ccmWriterMesh.C
+++ b/src/conversion/ccm/writer/ccmWriterMesh.C
@@ -509,7 +509,7 @@ void Foam::ccm::writer::writeCells
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -667,7 +667,7 @@ void Foam::ccm::writer::writeInterfaces
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/conversion/ccm/writer/ccmWriterSolution.C b/src/conversion/ccm/writer/ccmWriterSolution.C
index a64e470592..c6755d145e 100644
--- a/src/conversion/ccm/writer/ccmWriterSolution.C
+++ b/src/conversion/ccm/writer/ccmWriterSolution.C
@@ -153,7 +153,7 @@ void Foam::ccm::writer::writeSolution
                 mesh_,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
     }
@@ -372,7 +372,7 @@ void Foam::ccm::writer::writeSolution
                 runTime,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
 
             if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/src/conversion/common/reader/meshReaderAux.C b/src/conversion/common/reader/meshReaderAux.C
index e81e14149a..d4b4d5f426 100644
--- a/src/conversion/common/reader/meshReaderAux.C
+++ b/src/conversion/common/reader/meshReaderAux.C
@@ -88,7 +88,7 @@ void Foam::meshReader::writeInterfaces(const objectRegistry& registry) const
             registry,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -113,7 +113,7 @@ void Foam::meshReader::writeMeshLabelList
 ) const
 {
     // write constant/polyMesh/propertyName
-    IOList<label> ioObj
+    IOListRef<label> ioObj
     (
         IOobject
         (
@@ -122,8 +122,8 @@ void Foam::meshReader::writeMeshLabelList
             polyMesh::meshSubDir,
             registry,
             IOobject::NO_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_WRITE,
+            IOobject::NO_REGISTER
         ),
         list
     );
diff --git a/src/conversion/common/tables/boundaryRegion.C b/src/conversion/common/tables/boundaryRegion.C
index 002203ecb5..4cfe6b70d2 100644
--- a/src/conversion/common/tables/boundaryRegion.C
+++ b/src/conversion/common/tables/boundaryRegion.C
@@ -184,7 +184,7 @@ void Foam::boundaryRegion::readDict
             registry,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -216,7 +216,7 @@ void Foam::boundaryRegion::writeDict
             registry,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/conversion/common/tables/cellTable.C b/src/conversion/common/tables/cellTable.C
index 607d253970..3ec2971c96 100644
--- a/src/conversion/common/tables/cellTable.C
+++ b/src/conversion/common/tables/cellTable.C
@@ -327,7 +327,7 @@ void Foam::cellTable::readDict
             registry,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -360,7 +360,7 @@ void Foam::cellTable::writeDict
             registry,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/conversion/starcd/STARCDMeshWriter.C b/src/conversion/starcd/STARCDMeshWriter.C
index 4cef740c90..aa3c05004b 100644
--- a/src/conversion/starcd/STARCDMeshWriter.C
+++ b/src/conversion/starcd/STARCDMeshWriter.C
@@ -63,7 +63,7 @@ void Foam::fileFormats::STARCDMeshWriter::getCellTable()
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMesh.C b/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMesh.C
index 5b5a6dd2ea..dd564ffb3e 100644
--- a/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMesh.C
+++ b/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMesh.C
@@ -48,9 +48,9 @@ void Foam::dynamicFvMesh::readDict()
         "dynamicMeshDict",
         thisDb().time().constant(),
         thisDb(),
-        IOobject::MUST_READ_IF_MODIFIED,
+        IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false // Do not register
+        IOobject::NO_REGISTER
     );
 
     if (dictHeader.typeHeaderOk<IOdictionary>(false, false))
diff --git a/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C b/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C
index 3564381129..397735c757 100644
--- a/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C
+++ b/src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C
@@ -47,7 +47,7 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New(const IOobject& io)
         io.db(),
         IOobject::MUST_READ_IF_MODIFIED,
         IOobject::NO_WRITE,
-        false // Do not register
+        IOobject::NO_REGISTER
     );
 
     if (dictHeader.typeHeaderOk<IOdictionary>(true))
diff --git a/src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C b/src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C
index 90f4cd729c..16c7b1d674 100644
--- a/src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C
+++ b/src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C
@@ -59,9 +59,9 @@ Foam::dynamicInkJetFvMesh::dynamicInkJetFvMesh
                 "dynamicMeshDict",
                 io.time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
+                IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         ).optionalSubDict(typeName + "Coeffs")
     ),
diff --git a/src/dynamicFvMesh/dynamicMotionSolverListFvMesh/dynamicMotionSolverListFvMesh.C b/src/dynamicFvMesh/dynamicMotionSolverListFvMesh/dynamicMotionSolverListFvMesh.C
index d1f09660cc..7fe1a4168c 100644
--- a/src/dynamicFvMesh/dynamicMotionSolverListFvMesh/dynamicMotionSolverListFvMesh.C
+++ b/src/dynamicFvMesh/dynamicMotionSolverListFvMesh/dynamicMotionSolverListFvMesh.C
@@ -88,19 +88,21 @@ bool Foam::dynamicMotionSolverListFvMesh::init
         *this,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     IOdictionary dict(ioDict);
 
     label i = 0;
-    if (dict.found("solvers"))
+
+    const auto* dictptr = dict.findDict("solvers");
+    if (dictptr)
     {
-        const dictionary& solvertDict = dict.subDict("solvers");
+        const dictionary& solverDict = *dictptr;
 
-        motionSolvers_.setSize(solvertDict.size());
+        motionSolvers_.setSize(solverDict.size());
 
-        for (const entry& dEntry : solvertDict)
+        for (const entry& dEntry : solverDict)
         {
             if (dEntry.isDict())
             {
diff --git a/src/dynamicFvMesh/dynamicMultiMotionSolverFvMesh/dynamicMultiMotionSolverFvMesh.C b/src/dynamicFvMesh/dynamicMultiMotionSolverFvMesh/dynamicMultiMotionSolverFvMesh.C
index b1ab185e16..f6517d3249 100644
--- a/src/dynamicFvMesh/dynamicMultiMotionSolverFvMesh/dynamicMultiMotionSolverFvMesh.C
+++ b/src/dynamicFvMesh/dynamicMultiMotionSolverFvMesh/dynamicMultiMotionSolverFvMesh.C
@@ -84,7 +84,7 @@ bool Foam::dynamicMultiMotionSolverFvMesh::init(const bool doInit)
             *this,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
     const dictionary& dynamicMeshCoeffs = dynDict.subDict(typeName + "Coeffs");
diff --git a/src/dynamicFvMesh/dynamicRefineFvMesh/dynamicRefineFvMesh.C b/src/dynamicFvMesh/dynamicRefineFvMesh/dynamicRefineFvMesh.C
index d0f0d3ad7f..5d5ad7e906 100644
--- a/src/dynamicFvMesh/dynamicRefineFvMesh/dynamicRefineFvMesh.C
+++ b/src/dynamicFvMesh/dynamicRefineFvMesh/dynamicRefineFvMesh.C
@@ -174,9 +174,9 @@ void Foam::dynamicRefineFvMesh::readDict()
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
+                IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         ).optionalSubDict(typeName + "Coeffs")
     );
@@ -1293,9 +1293,9 @@ bool Foam::dynamicRefineFvMesh::updateTopology()
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
+                IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         ).optionalSubDict(typeName + "Coeffs")
     );
@@ -1509,8 +1509,8 @@ bool Foam::dynamicRefineFvMesh::writeObject
                 time().timeName(),
                 *this,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             *this,
             dimensionedScalar(dimless, Zero)
diff --git a/src/dynamicFvMesh/simplifiedDynamicFvMesh/simplifiedDynamicFvMesh.C b/src/dynamicFvMesh/simplifiedDynamicFvMesh/simplifiedDynamicFvMesh.C
index c7db30f8af..3de89f4374 100644
--- a/src/dynamicFvMesh/simplifiedDynamicFvMesh/simplifiedDynamicFvMesh.C
+++ b/src/dynamicFvMesh/simplifiedDynamicFvMesh/simplifiedDynamicFvMesh.C
@@ -55,7 +55,7 @@ Foam::simplifiedMeshes::simplifiedDynamicFvMeshBase::New
         io.db(),
         IOobject::MUST_READ_IF_MODIFIED,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (dictHeader.typeHeaderOk<IOdictionary>(true))
diff --git a/src/dynamicMesh/meshCut/meshModifiers/multiDirRefinement/multiDirRefinement.C b/src/dynamicMesh/meshCut/meshModifiers/multiDirRefinement/multiDirRefinement.C
index 42a5446c5a..94b23d800e 100644
--- a/src/dynamicMesh/meshCut/meshModifiers/multiDirRefinement/multiDirRefinement.C
+++ b/src/dynamicMesh/meshCut/meshModifiers/multiDirRefinement/multiDirRefinement.C
@@ -254,10 +254,10 @@ void Foam::multiDirRefinement::refineHex8
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
-            List<refinementHistory::splitCell8>(0),
-            labelList(0),
+            List<refinementHistory::splitCell8>(),
+            labelList(),
             false
         )                                   // refinement history
     );
diff --git a/src/dynamicMesh/motionSmoother/motionSmootherAlgo.C b/src/dynamicMesh/motionSmoother/motionSmootherAlgo.C
index 7356791427..ddb61551d5 100644
--- a/src/dynamicMesh/motionSmoother/motionSmootherAlgo.C
+++ b/src/dynamicMesh/motionSmoother/motionSmootherAlgo.C
@@ -789,7 +789,7 @@ Foam::tmp<Foam::pointField> Foam::motionSmootherAlgo::curPoints() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         scale_*displacement_,
         actualPatchFieldTypes,
diff --git a/src/dynamicMesh/motionSmoother/motionSmootherAlgoTemplates.C b/src/dynamicMesh/motionSmoother/motionSmootherAlgoTemplates.C
index 496bf281d1..98f45bf5be 100644
--- a/src/dynamicMesh/motionSmoother/motionSmootherAlgoTemplates.C
+++ b/src/dynamicMesh/motionSmoother/motionSmootherAlgoTemplates.C
@@ -153,7 +153,7 @@ Foam::motionSmootherAlgo::avg
             fld.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         fld.mesh(),
         dimensioned<Type>(fld.dimensions(), Zero)
diff --git a/src/dynamicMesh/motionSolvers/componentDisplacement/componentDisplacementMotionSolver.C b/src/dynamicMesh/motionSolvers/componentDisplacement/componentDisplacementMotionSolver.C
index e82844508a..76ea901109 100644
--- a/src/dynamicMesh/motionSolvers/componentDisplacement/componentDisplacementMotionSolver.C
+++ b/src/dynamicMesh/motionSolvers/componentDisplacement/componentDisplacementMotionSolver.C
@@ -91,7 +91,7 @@ Foam::componentDisplacementMotionSolver::componentDisplacementMotionSolver
                 mesh,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         ).component(cmpt_)
     ),
@@ -124,7 +124,7 @@ Foam::componentDisplacementMotionSolver::componentDisplacementMotionSolver
                         mesh,
                         IOobject::MUST_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     )
                 )
             << exit(FatalError);
diff --git a/src/dynamicMesh/motionSolvers/displacement/interpolation/displacementInterpolationMotionSolver.C b/src/dynamicMesh/motionSolvers/displacement/interpolation/displacementInterpolationMotionSolver.C
index 3814271ecf..dbd93a73fb 100644
--- a/src/dynamicMesh/motionSolvers/displacement/interpolation/displacementInterpolationMotionSolver.C
+++ b/src/dynamicMesh/motionSolvers/displacement/interpolation/displacementInterpolationMotionSolver.C
@@ -104,7 +104,7 @@ void Foam::displacementInterpolationMotionSolver::calcInterpolation()
                 mesh(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/src/dynamicMesh/motionSolvers/displacement/layeredSolver/displacementLayeredMotionMotionSolver.C b/src/dynamicMesh/motionSolvers/displacement/layeredSolver/displacementLayeredMotionMotionSolver.C
index d714ffa5f9..fefa520f88 100644
--- a/src/dynamicMesh/motionSolvers/displacement/layeredSolver/displacementLayeredMotionMotionSolver.C
+++ b/src/dynamicMesh/motionSolvers/displacement/layeredSolver/displacementLayeredMotionMotionSolver.C
@@ -345,7 +345,7 @@ void Foam::displacementLayeredMotionMotionSolver::cellZoneSolve
                     mesh(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 pointDisplacement_  // to inherit the boundary conditions
             )
@@ -438,7 +438,7 @@ void Foam::displacementLayeredMotionMotionSolver::cellZoneSolve
                 mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pointMesh::New(mesh()),
             dimensionedScalar(dimLength, Zero)
diff --git a/src/dynamicMesh/motionSolvers/displacement/points0/points0MotionSolver.C b/src/dynamicMesh/motionSolvers/displacement/points0/points0MotionSolver.C
index 7671c6ae6a..f79067ef29 100644
--- a/src/dynamicMesh/motionSolvers/displacement/points0/points0MotionSolver.C
+++ b/src/dynamicMesh/motionSolvers/displacement/points0/points0MotionSolver.C
@@ -56,7 +56,7 @@ Foam::IOobject Foam::points0MotionSolver::points0IO(const polyMesh& mesh)
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     // If points0 are located in constant directory, verify their existence
@@ -111,7 +111,7 @@ Foam::points0MotionSolver::points0MotionSolver
                         mesh,
                         IOobject::MUST_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     )
                 )
             << exit(FatalError);
diff --git a/src/dynamicMesh/motionSolvers/displacement/solidBody/pointPatchFields/derived/solidBodyMotionDisplacement/solidBodyMotionDisplacementPointPatchVectorField.C b/src/dynamicMesh/motionSolvers/displacement/solidBody/pointPatchFields/derived/solidBodyMotionDisplacement/solidBodyMotionDisplacementPointPatchVectorField.C
index 43ac06e52f..e2c2ce7f8e 100644
--- a/src/dynamicMesh/motionSolvers/displacement/solidBody/pointPatchFields/derived/solidBodyMotionDisplacement/solidBodyMotionDisplacementPointPatchVectorField.C
+++ b/src/dynamicMesh/motionSolvers/displacement/solidBody/pointPatchFields/derived/solidBodyMotionDisplacement/solidBodyMotionDisplacementPointPatchVectorField.C
@@ -148,7 +148,7 @@ solidBodyMotionDisplacementPointPatchVectorField::localPoints0() const
                 this->db(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/src/dynamicMesh/polyMeshFilter/polyMeshFilter.C b/src/dynamicMesh/polyMeshFilter/polyMeshFilter.C
index b0e057b3a5..3d8a01bcb5 100644
--- a/src/dynamicMesh/polyMeshFilter/polyMeshFilter.C
+++ b/src/dynamicMesh/polyMeshFilter/polyMeshFilter.C
@@ -82,7 +82,7 @@ Foam::autoPtr<Foam::fvMesh> Foam::polyMeshFilter::copyMesh(const fvMesh& mesh)
             mesh.time(),
             IOobject::READ_IF_PRESENT,  // read fv* if present
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         true // parallel sync
diff --git a/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8/hexRef8.C b/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8/hexRef8.C
index e1986b0962..2a361e6bbd 100644
--- a/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8/hexRef8.C
+++ b/src/dynamicMesh/polyTopoChange/polyTopoChange/hexRef8/hexRef8.C
@@ -3049,7 +3049,7 @@ Foam::labelList Foam::hexRef8::consistentSlowRefinement2
     //            fMesh,
     //            IOobject::NO_READ,
     //            IOobject::NO_WRITE,
-    //            false
+    //            IOobject::NO_REGISTER
     //        ),
     //        fMesh,
     //        dimensionedScalar(dimless, Zero)
diff --git a/src/engine/engineMesh/engineMesh/engineMeshNew.C b/src/engine/engineMesh/engineMesh/engineMeshNew.C
index 9cb427c8da..e37d2138a0 100644
--- a/src/engine/engineMesh/engineMesh/engineMeshNew.C
+++ b/src/engine/engineMesh/engineMesh/engineMeshNew.C
@@ -42,7 +42,7 @@ Foam::autoPtr<Foam::engineMesh> Foam::engineMesh::New(const IOobject& io)
             io.db(),
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/engine/engineTime/engineTime/engineTime.C b/src/engine/engineTime/engineTime/engineTime.C
index 7d5da7f16d..51dcf7cb4f 100644
--- a/src/engine/engineTime/engineTime/engineTime.C
+++ b/src/engine/engineTime/engineTime/engineTime.C
@@ -66,7 +66,7 @@ Foam::engineTime::engineTime
             *this,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     )
 {}
diff --git a/src/finiteArea/interpolation/edgeInterpolation/edgeInterpolation.C b/src/finiteArea/interpolation/edgeInterpolation/edgeInterpolation.C
index 0e5f0b25f5..be58b30325 100644
--- a/src/finiteArea/interpolation/edgeInterpolation/edgeInterpolation.C
+++ b/src/finiteArea/interpolation/edgeInterpolation/edgeInterpolation.C
@@ -209,7 +209,7 @@ void Foam::edgeInterpolation::makeLPN() const
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimLength
@@ -290,7 +290,7 @@ void Foam::edgeInterpolation::makeWeights() const
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimensionedScalar(dimless, 1)
@@ -370,7 +370,7 @@ void Foam::edgeInterpolation::makeDeltaCoeffs() const
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimensionedScalar(dimless/dimLength, SMALL)
@@ -464,7 +464,7 @@ void Foam::edgeInterpolation::makeCorrectionVectors() const
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimless
@@ -571,7 +571,7 @@ void Foam::edgeInterpolation::makeSkewCorrectionVectors() const
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimensionedVector(dimless, Zero)
diff --git a/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C b/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C
index 95f1d94890..11009e6039 100644
--- a/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C
+++ b/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C
@@ -216,7 +216,7 @@ Foam::tmp<Foam::volVectorField> Foam::SRF::SRFModel::Uabs() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             Usrf
         )
diff --git a/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModelNew.C b/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModelNew.C
index c476c65b05..12f711ef29 100644
--- a/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModelNew.C
+++ b/src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModelNew.C
@@ -42,9 +42,9 @@ Foam::autoPtr<Foam::SRF::SRFModel> Foam::SRF::SRFModel::New
             "SRFProperties",
             Urel.time().constant(),
             Urel.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/finiteVolume/cfdTools/general/fvOptions/fvOptionListTemplates.C b/src/finiteVolume/cfdTools/general/fvOptions/fvOptionListTemplates.C
index 374cc5ab25..c8b4ccbc23 100644
--- a/src/finiteVolume/cfdTools/general/fvOptions/fvOptionListTemplates.C
+++ b/src/finiteVolume/cfdTools/general/fvOptions/fvOptionListTemplates.C
@@ -267,10 +267,10 @@ Foam::tmp<Foam::fvMatrix<Type>> Foam::fv::optionList::operator()
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
-        dimensionedScalar("one", dimless, 1.0)
+        dimensionedScalar("one", dimless, scalar(1))
     );
 
     return this->operator()(alpha, one, field, field.name());
diff --git a/src/finiteVolume/expressions/base/fvExprDriverI.H b/src/finiteVolume/expressions/base/fvExprDriverI.H
index 949f58f1e9..d9a0cf0ff6 100644
--- a/src/finiteVolume/expressions/base/fvExprDriverI.H
+++ b/src/finiteVolume/expressions/base/fvExprDriverI.H
@@ -157,7 +157,7 @@ Foam::expressions::fvExprDriver::readAndRegister
             meshRef.thisDb(),
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false  // Unregistered
+            IOobject::NO_REGISTER
         ),
         meshRef
     );
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/electrostaticDeposition/electrostaticDepositionFvPatchScalarField.C b/src/finiteVolume/fields/fvPatchFields/derived/electrostaticDeposition/electrostaticDepositionFvPatchScalarField.C
index e4ee7dbcf1..9786b53ace 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/electrostaticDeposition/electrostaticDepositionFvPatchScalarField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/electrostaticDeposition/electrostaticDepositionFvPatchScalarField.C
@@ -112,7 +112,7 @@ void Foam::electrostaticDepositionFvPatchScalarField::writeFilmFields() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false // do not register
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimLength)
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/CoEulerDdtScheme/CoEulerDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/CoEulerDdtScheme/CoEulerDdtScheme.C
index eff7207c0a..b01c194353 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/CoEulerDdtScheme/CoEulerDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/CoEulerDdtScheme/CoEulerDdtScheme.C
@@ -835,7 +835,7 @@ tmp<surfaceScalarField> CoEulerDdtScheme<Type>::meshPhi
                 mesh().thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh(),
             dimensionedScalar(dimVolume/dimTime, Zero)
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/CrankNicolsonDdtScheme/CrankNicolsonDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/CrankNicolsonDdtScheme/CrankNicolsonDdtScheme.C
index 207245e9d2..a7ec7a31af 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/CrankNicolsonDdtScheme/CrankNicolsonDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/CrankNicolsonDdtScheme/CrankNicolsonDdtScheme.C
@@ -1630,7 +1630,7 @@ tmp<surfaceScalarField> CrankNicolsonDdtScheme<Type>::meshPhi
                 mesh().thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             coef_(meshPhi0)*mesh().phi() - offCentre_(meshPhi0())
         )
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/SLTSDdtScheme/SLTSDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/SLTSDdtScheme/SLTSDdtScheme.C
index 38ac5d0412..ecf7d1955f 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/SLTSDdtScheme/SLTSDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/SLTSDdtScheme/SLTSDdtScheme.C
@@ -840,7 +840,7 @@ tmp<surfaceScalarField> SLTSDdtScheme<Type>::meshPhi
                 mesh().thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh(),
             dimensionedScalar(dimVolume/dimTime, Zero)
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/backwardDdtScheme/backwardDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/backwardDdtScheme/backwardDdtScheme.C
index e470ec87c8..3b2e28a08a 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/backwardDdtScheme/backwardDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/backwardDdtScheme/backwardDdtScheme.C
@@ -983,7 +983,7 @@ tmp<surfaceScalarField> backwardDdtScheme<Type>::meshPhi
                 mesh().thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             coefftn_0*mesh().phi() - coefft0_00*mesh().phi().oldTime()
         )
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
index bf3979fc21..df63268dd1 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
@@ -599,7 +599,7 @@ tmp<surfaceScalarField> localEulerDdtScheme<Type>::meshPhi
                 mesh().thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh(),
             dimensionedScalar(dimVolume/dimTime, Zero)
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/steadyStateDdtScheme/steadyStateDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/steadyStateDdtScheme/steadyStateDdtScheme.C
index 33fb99b030..a970206248 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/steadyStateDdtScheme/steadyStateDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/steadyStateDdtScheme/steadyStateDdtScheme.C
@@ -383,7 +383,7 @@ tmp<surfaceScalarField> steadyStateDdtScheme<Type>::meshPhi
             mesh().thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimensionedScalar(dimVolume/dimTime, Zero)
diff --git a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/invDistLeastSquaresVectors.C b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/invDistLeastSquaresVectors.C
index 0e395adc1d..5bfe9a515f 100644
--- a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/invDistLeastSquaresVectors.C
+++ b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/invDistLeastSquaresVectors.C
@@ -51,7 +51,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
@@ -65,7 +65,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
diff --git a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresVectors.C b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresVectors.C
index 7701e8d3a4..40dfc42445 100644
--- a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresVectors.C
+++ b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresVectors.C
@@ -51,7 +51,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
@@ -65,7 +65,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
diff --git a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/unweightedLeastSquaresVectors.C b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/unweightedLeastSquaresVectors.C
index 328916c924..20c8bf5406 100644
--- a/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/unweightedLeastSquaresVectors.C
+++ b/src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/unweightedLeastSquaresVectors.C
@@ -51,7 +51,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
@@ -65,7 +65,7 @@ Foam::leastSquaresVectors::leastSquaresVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless/dimLength, Zero)
diff --git a/src/finiteVolume/finiteVolume/snGradSchemes/limitedSnGrad/limitedSnGrad.C b/src/finiteVolume/finiteVolume/snGradSchemes/limitedSnGrad/limitedSnGrad.C
index addf8e45e6..d19f4dddb6 100644
--- a/src/finiteVolume/finiteVolume/snGradSchemes/limitedSnGrad/limitedSnGrad.C
+++ b/src/finiteVolume/finiteVolume/snGradSchemes/limitedSnGrad/limitedSnGrad.C
@@ -103,9 +103,9 @@ limitedSnGrad<Type>::correction
                     vf.mesh().thisDb(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
-                fvc::cellReduce(limiter, minEqOp<scalar>(), scalar(1.0))
+                fvc::cellReduce(limiter, minEqOp<scalar>(), scalar(1))
             );
             Info<< "Writing limiter field to " << volLimiter.objectPath()
                 << endl;
diff --git a/src/finiteVolume/fvMatrices/solvers/MULES/CMULESTemplates.C b/src/finiteVolume/fvMatrices/solvers/MULES/CMULESTemplates.C
index 5daaddf683..070e9b557b 100644
--- a/src/finiteVolume/fvMatrices/solvers/MULES/CMULESTemplates.C
+++ b/src/finiteVolume/fvMatrices/solvers/MULES/CMULESTemplates.C
@@ -271,7 +271,7 @@ void Foam::MULES::limiterCorr
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimless,
@@ -602,7 +602,7 @@ void Foam::MULES::limitCorr
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimless,
diff --git a/src/finiteVolume/fvMatrices/solvers/MULES/MULESTemplates.C b/src/finiteVolume/fvMatrices/solvers/MULES/MULESTemplates.C
index 388e0a4a43..30ad56a9d3 100644
--- a/src/finiteVolume/fvMatrices/solvers/MULES/MULESTemplates.C
+++ b/src/finiteVolume/fvMatrices/solvers/MULES/MULESTemplates.C
@@ -265,7 +265,7 @@ void Foam::MULES::limiter
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimless,
@@ -622,7 +622,7 @@ void Foam::MULES::limit
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimless,
diff --git a/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedCellToFaceStencilTemplates.C b/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedCellToFaceStencilTemplates.C
index e2444ce783..a4de446398 100644
--- a/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedCellToFaceStencilTemplates.C
+++ b/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedCellToFaceStencilTemplates.C
@@ -109,7 +109,7 @@ Foam::extendedCellToFaceStencil::weightedSum
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<Type>(fld.dimensions(), Zero)
diff --git a/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedUpwindCellToFaceStencilTemplates.C b/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedUpwindCellToFaceStencilTemplates.C
index a5be65dc67..82b73a5805 100644
--- a/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedUpwindCellToFaceStencilTemplates.C
+++ b/src/finiteVolume/fvMesh/extendedStencil/cellToFace/extendedUpwindCellToFaceStencilTemplates.C
@@ -58,7 +58,7 @@ Foam::extendedUpwindCellToFaceStencil::weightedSum
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<Type>(fld.dimensions(), Zero)
diff --git a/src/finiteVolume/fvMesh/fvGeometryScheme/basic/basicFvGeometryScheme.C b/src/finiteVolume/fvMesh/fvGeometryScheme/basic/basicFvGeometryScheme.C
index 58da31adbe..867b38a287 100644
--- a/src/finiteVolume/fvMesh/fvGeometryScheme/basic/basicFvGeometryScheme.C
+++ b/src/finiteVolume/fvMesh/fvGeometryScheme/basic/basicFvGeometryScheme.C
@@ -87,7 +87,7 @@ Foam::tmp<Foam::surfaceScalarField> Foam::basicFvGeometryScheme::weights() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimless
@@ -171,7 +171,7 @@ Foam::basicFvGeometryScheme::deltaCoeffs() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimless/dimLength
@@ -230,7 +230,7 @@ Foam::basicFvGeometryScheme::nonOrthDeltaCoeffs() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimless/dimLength
@@ -314,7 +314,7 @@ Foam::basicFvGeometryScheme::nonOrthCorrectionVectors() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimless
diff --git a/src/finiteVolume/fvMesh/fvMesh.C b/src/finiteVolume/fvMesh/fvMesh.C
index 655b870a50..9d1765ad0d 100644
--- a/src/finiteVolume/fvMesh/fvMesh.C
+++ b/src/finiteVolume/fvMesh/fvMesh.C
@@ -193,7 +193,7 @@ void Foam::fvMesh::storeOldVol(const scalarField& V)
                     *this,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 *this,
                 dimVolume
@@ -302,7 +302,7 @@ bool Foam::fvMesh::init(const bool doInit)
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             *this
         );
@@ -327,7 +327,7 @@ bool Foam::fvMesh::init(const bool doInit)
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             *this
         );
@@ -346,7 +346,7 @@ bool Foam::fvMesh::init(const bool doInit)
                     *this,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 V()
             );
@@ -914,7 +914,7 @@ void Foam::fvMesh::movePoints(const pointField& p)
                 *this,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             *this,
             dimensionedScalar(dimVolume/dimTime, Zero)
@@ -1021,7 +1021,7 @@ void Foam::fvMesh::updateMesh(const mapPolyMesh& mpm)
                 *this,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             *this,
             dimensionedScalar(dimVolume/dimTime, Zero)
diff --git a/src/finiteVolume/fvMesh/fvMeshTools/fvMeshTools.C b/src/finiteVolume/fvMesh/fvMeshTools/fvMeshTools.C
index d42c207e20..a537c114bb 100644
--- a/src/finiteVolume/fvMesh/fvMeshTools/fvMeshTools.C
+++ b/src/finiteVolume/fvMesh/fvMeshTools/fvMeshTools.C
@@ -498,7 +498,7 @@ Foam::fvMeshTools::newMesh
                 io.db(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -766,7 +766,7 @@ Foam::fvMeshTools::loadOrCreateMesh
                 io.db(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -1077,7 +1077,7 @@ void Foam::fvMeshTools::createDummyFvMeshFiles
             mesh.thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (!io.typeHeaderOk<IOdictionary>(false))
@@ -1103,7 +1103,7 @@ void Foam::fvMeshTools::createDummyFvMeshFiles
             mesh.thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         if (!io.typeHeaderOk<IOdictionary>(false))
diff --git a/src/finiteVolume/fvMesh/fvMeshTools/fvMeshToolsProcAddr.C b/src/finiteVolume/fvMesh/fvMeshTools/fvMeshToolsProcAddr.C
index 7f05a8329c..637ab073a2 100644
--- a/src/finiteVolume/fvMesh/fvMeshTools/fvMeshToolsProcAddr.C
+++ b/src/finiteVolume/fvMesh/fvMeshTools/fvMeshToolsProcAddr.C
@@ -231,7 +231,7 @@ Foam::fvMeshTools::readProcAddressing
         mesh.thisDb(),
         IOobject::READ_IF_PRESENT,
         IOobject::NO_WRITE,
-        false  // no register
+        IOobject::NO_REGISTER
     );
 
     //if (ioAddr.typeHeaderOk<labelIOList>(true))
@@ -323,7 +323,7 @@ void Foam::fvMeshTools::writeProcAddressing
         mesh.thisDb(),
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false  // no register
+        IOobject::NO_REGISTER
     );
 
     // cellProcAddressing (polyMesh)
diff --git a/src/finiteVolume/fvMesh/fvPatches/constraint/cyclicACMI/cyclicACMIFvPatch.C b/src/finiteVolume/fvMesh/fvPatches/constraint/cyclicACMI/cyclicACMIFvPatch.C
index 8ddab7a43e..9fd6d217f9 100644
--- a/src/finiteVolume/fvMesh/fvPatches/constraint/cyclicACMI/cyclicACMIFvPatch.C
+++ b/src/finiteVolume/fvMesh/fvPatches/constraint/cyclicACMI/cyclicACMIFvPatch.C
@@ -157,7 +157,7 @@ Foam::cyclicACMIFvPatch::cyclicACMIFvPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     )
diff --git a/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.C b/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.C
index 7a242f9525..6b8ec3cc44 100644
--- a/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.C
+++ b/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMesh.C
@@ -68,7 +68,7 @@ bool Foam::simplifiedMeshes::columnFvMeshInfo::setPatchEntries
         runTime,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     const wordHashSet constraintPatches(polyPatch::constraintTypes());
@@ -213,7 +213,7 @@ void Foam::simplifiedMeshes::columnFvMeshInfo::initialise(const Time& runTime)
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         scalar dxi = 0;
diff --git a/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMeshTemplates.C b/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMeshTemplates.C
index e7dc1fc3cb..b65d76a62f 100644
--- a/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMeshTemplates.C
+++ b/src/finiteVolume/fvMesh/simplifiedFvMesh/columnFvMesh/columnFvMeshTemplates.C
@@ -46,7 +46,7 @@ void Foam::simplifiedMeshes::columnFvMeshInfo::initialiseZone
                 zoneType.mesh(),
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             zoneType.mesh()
         ).names()
diff --git a/src/finiteVolume/fvMesh/wallDist/patchDistMethods/advectionDiffusion/advectionDiffusionPatchDistMethod.C b/src/finiteVolume/fvMesh/wallDist/patchDistMethods/advectionDiffusion/advectionDiffusionPatchDistMethod.C
index 4a78d65e05..283cbb4331 100644
--- a/src/finiteVolume/fvMesh/wallDist/patchDistMethods/advectionDiffusion/advectionDiffusionPatchDistMethod.C
+++ b/src/finiteVolume/fvMesh/wallDist/patchDistMethods/advectionDiffusion/advectionDiffusionPatchDistMethod.C
@@ -108,7 +108,7 @@ bool Foam::patchDistMethods::advectionDiffusion::correct
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless, Zero),
diff --git a/src/finiteVolume/fvMesh/wallDist/patchDistMethods/directionalMeshWave/directionalMeshWavePatchDistMethod.C b/src/finiteVolume/fvMesh/wallDist/patchDistMethods/directionalMeshWave/directionalMeshWavePatchDistMethod.C
index 5c66476d89..45d36c44ee 100644
--- a/src/finiteVolume/fvMesh/wallDist/patchDistMethods/directionalMeshWave/directionalMeshWavePatchDistMethod.C
+++ b/src/finiteVolume/fvMesh/wallDist/patchDistMethods/directionalMeshWave/directionalMeshWavePatchDistMethod.C
@@ -78,7 +78,7 @@ bool Foam::patchDistMethods::directionalMeshWave::correct(volScalarField& y)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless, Zero),
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/blended/blended.H b/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/blended/blended.H
index e99bf4889c..ae2adf9892 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/blended/blended.H
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/blended/blended.H
@@ -142,7 +142,7 @@ public:
                         this->mesh().thisDb(),
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     this->mesh(),
                     dimensionedScalar
@@ -172,7 +172,7 @@ public:
                         this->mesh().thisDb(),
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     this->mesh(),
                     dimensionedScalar
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/upwind/upwind.H b/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/upwind/upwind.H
index 3831b19ccd..f390bd62b0 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/upwind/upwind.H
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/upwind/upwind.H
@@ -124,7 +124,7 @@ public:
                     this->mesh().thisDb(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 this->mesh(),
                 dimensionedScalar(dimless, Zero)
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/cubic/cubic.H b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/cubic/cubic.H
index 6bfab29ab2..8346b6927b 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/cubic/cubic.H
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/cubic/cubic.H
@@ -142,7 +142,7 @@ public:
                         mesh,
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     surfaceInterpolationScheme<Type>::interpolate(vf, kSc, -kSc)
                 )
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwind.C b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwind.C
index 26aba7f1f3..7848088c17 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwind.C
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwind.C
@@ -50,7 +50,7 @@ Foam::linearUpwind<Type>::correction
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<Type>(vf.name(), vf.dimensions(), Zero)
@@ -161,7 +161,7 @@ Foam::linearUpwind<Foam::vector>::correction
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<vector>(vf.name(), vf.dimensions(), Zero)
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwindV.C b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwindV.C
index 193bb90561..48439fe740 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwindV.C
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/linearUpwind/linearUpwindV.C
@@ -52,7 +52,7 @@ Foam::linearUpwindV<Type>::correction
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<Type>(vf.dimensions(), Zero)
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/midPoint/midPoint.H b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/midPoint/midPoint.H
index 18d413df10..8bfb0360dc 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/midPoint/midPoint.H
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/midPoint/midPoint.H
@@ -114,7 +114,7 @@ public:
                         this->mesh().thisDb(),
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     this->mesh(),
                     dimensionedScalar("0.5", dimless, 0.5)
diff --git a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/skewCorrected/skewCorrectionVectors.C b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/skewCorrected/skewCorrectionVectors.C
index ac76afffea..673f7d9e97 100644
--- a/src/finiteVolume/interpolation/surfaceInterpolation/schemes/skewCorrected/skewCorrectionVectors.C
+++ b/src/finiteVolume/interpolation/surfaceInterpolation/schemes/skewCorrected/skewCorrectionVectors.C
@@ -52,7 +52,7 @@ Foam::skewCorrectionVectors::skewCorrectionVectors(const fvMesh& mesh)
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimless
diff --git a/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMD.C b/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMD.C
index f80669e29b..b733b036d8 100644
--- a/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMD.C
+++ b/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMD.C
@@ -521,7 +521,7 @@ void Foam::DMDModels::STDMD::amplitudes()
             mesh_,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -977,7 +977,7 @@ bool Foam::DMDModels::STDMD::initialise(const RMatrix& z)
                     mesh_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 nSnap
             );
diff --git a/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMDTemplates.C b/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMDTemplates.C
index 7a68139c34..1804741bbd 100644
--- a/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMDTemplates.C
+++ b/src/functionObjects/field/DMD/DMDModels/derived/STDMD/STDMDTemplates.C
@@ -121,7 +121,7 @@ bool Foam::DMDModels::STDMD::calcModes()
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensioned<Type>(dimless, Zero),
@@ -138,7 +138,7 @@ bool Foam::DMDModels::STDMD::calcModes()
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensioned<Type>(dimless, Zero),
diff --git a/src/functionObjects/field/age/age.C b/src/functionObjects/field/age/age.C
index 2f9dfccb2c..4da8f127bc 100644
--- a/src/functionObjects/field/age/age.C
+++ b/src/functionObjects/field/age/age.C
@@ -161,10 +161,10 @@ bool Foam::functionObjects::age::execute()
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::AUTO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
-        dimensionedScalar(dimTime, 0),
+        dimensionedScalar(dimTime, Zero),
         patchTypes()
     );
     volScalarField& age = tage.ref();
diff --git a/src/functionObjects/field/fieldCoordinateSystemTransform/fieldCoordinateSystemTransform.C b/src/functionObjects/field/fieldCoordinateSystemTransform/fieldCoordinateSystemTransform.C
index 1520e204b8..3406d1edb4 100644
--- a/src/functionObjects/field/fieldCoordinateSystemTransform/fieldCoordinateSystemTransform.C
+++ b/src/functionObjects/field/fieldCoordinateSystemTransform/fieldCoordinateSystemTransform.C
@@ -105,7 +105,7 @@ Foam::functionObjects::fieldCoordinateSystemTransform::srotTensor() const
                     mesh_.objectRegistry::db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false // no register
+                    IOobject::NO_REGISTER
                 ),
                 mesh_,
                 dimless,
@@ -150,7 +150,7 @@ Foam::functionObjects::fieldCoordinateSystemTransform::vrotTensor() const
                     mesh_.objectRegistry::db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false // no register
+                    IOobject::NO_REGISTER
                 ),
                 mesh_,
                 dimless,
diff --git a/src/functionObjects/field/pressure/pressure.C b/src/functionObjects/field/pressure/pressure.C
index f254c3815d..1ae36dff36 100644
--- a/src/functionObjects/field/pressure/pressure.C
+++ b/src/functionObjects/field/pressure/pressure.C
@@ -140,7 +140,7 @@ Foam::tmp<Foam::volScalarField> Foam::functionObjects::pressure::rhoScale
                 p.mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p,
             fvPatchField<scalar>::calculatedType()
diff --git a/src/functionObjects/field/resolutionIndex/resolutionIndexModels/resolutionIndexModel/resolutionIndexModel.C b/src/functionObjects/field/resolutionIndex/resolutionIndexModels/resolutionIndexModel/resolutionIndexModel.C
index 0255a9b58c..b4e4610989 100644
--- a/src/functionObjects/field/resolutionIndex/resolutionIndexModels/resolutionIndexModel/resolutionIndexModel.C
+++ b/src/functionObjects/field/resolutionIndex/resolutionIndexModels/resolutionIndexModel/resolutionIndexModel.C
@@ -54,7 +54,7 @@ Foam::tmp<Foam::volScalarField> Foam::resolutionIndexModel::V() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimVolume,
diff --git a/src/functionObjects/field/writeCellCentres/writeCellCentres.C b/src/functionObjects/field/writeCellCentres/writeCellCentres.C
index 313a92d2cd..6ab11c3956 100644
--- a/src/functionObjects/field/writeCellCentres/writeCellCentres.C
+++ b/src/functionObjects/field/writeCellCentres/writeCellCentres.C
@@ -82,7 +82,7 @@ bool Foam::functionObjects::writeCellCentres::write()
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_.C(),
         calculatedFvPatchScalarField::typeName
@@ -105,7 +105,7 @@ bool Foam::functionObjects::writeCellCentres::write()
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_.C().component(i)
         );
diff --git a/src/functionObjects/field/writeCellVolumes/writeCellVolumes.C b/src/functionObjects/field/writeCellVolumes/writeCellVolumes.C
index f4e5301ffa..3575033041 100644
--- a/src/functionObjects/field/writeCellVolumes/writeCellVolumes.C
+++ b/src/functionObjects/field/writeCellVolumes/writeCellVolumes.C
@@ -82,7 +82,7 @@ bool Foam::functionObjects::writeCellVolumes::write()
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(mesh_.V().dimensions(), Zero),
diff --git a/src/functionObjects/lagrangian/cloudInfo/cloudInfo.C b/src/functionObjects/lagrangian/cloudInfo/cloudInfo.C
index ae81784e44..8881185f94 100644
--- a/src/functionObjects/lagrangian/cloudInfo/cloudInfo.C
+++ b/src/functionObjects/lagrangian/cloudInfo/cloudInfo.C
@@ -173,7 +173,7 @@ bool Foam::functionObjects::cloudInfo::performAction(unsigned request)
                     obr_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 )
             );
 
diff --git a/src/functionObjects/lagrangian/dataCloud/dataCloud.C b/src/functionObjects/lagrangian/dataCloud/dataCloud.C
index d176ab13df..e34be5bc70 100644
--- a/src/functionObjects/lagrangian/dataCloud/dataCloud.C
+++ b/src/functionObjects/lagrangian/dataCloud/dataCloud.C
@@ -67,7 +67,7 @@ bool Foam::functionObjects::dataCloud::writeCloud
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/functionObjects/lagrangian/vtkCloud/vtkCloud.C b/src/functionObjects/lagrangian/vtkCloud/vtkCloud.C
index 108f3cc22d..08557fd401 100644
--- a/src/functionObjects/lagrangian/vtkCloud/vtkCloud.C
+++ b/src/functionObjects/lagrangian/vtkCloud/vtkCloud.C
@@ -116,7 +116,7 @@ bool Foam::functionObjects::vtkCloud::writeCloud
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/functionObjects/solvers/electricPotential/electricPotential.C b/src/functionObjects/solvers/electricPotential/electricPotential.C
index e0a37bd0cb..0118ee1705 100644
--- a/src/functionObjects/solvers/electricPotential/electricPotential.C
+++ b/src/functionObjects/solvers/electricPotential/electricPotential.C
@@ -79,7 +79,7 @@ Foam::functionObjects::electricPotential::sigma() const
         mesh_.time(),
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (phases_.size())
@@ -126,7 +126,7 @@ Foam::functionObjects::electricPotential::epsilonm() const
         mesh_.time(),
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (phases_.size())
@@ -356,7 +356,7 @@ bool Foam::functionObjects::electricPotential::write()
                 mesh_.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             -fvc::grad(eV),
             calculatedFvPatchField<vector>::typeName
@@ -379,7 +379,7 @@ bool Foam::functionObjects::electricPotential::write()
                 mesh_.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             -tsigma*fvc::grad(eV),
             calculatedFvPatchField<vector>::typeName
@@ -402,7 +402,7 @@ bool Foam::functionObjects::electricPotential::write()
                 mesh_.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvc::div(tepsilonm*E),
             calculatedFvPatchField<scalar>::typeName
diff --git a/src/functionObjects/solvers/energyTransport/energyTransport.C b/src/functionObjects/solvers/energyTransport/energyTransport.C
index 3335c6994d..4df38d094a 100644
--- a/src/functionObjects/solvers/energyTransport/energyTransport.C
+++ b/src/functionObjects/solvers/energyTransport/energyTransport.C
@@ -121,7 +121,7 @@ Foam::functionObjects::energyTransport::rho() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         rho_
@@ -158,7 +158,7 @@ Foam::functionObjects::energyTransport::Cp() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         Cp_
@@ -189,7 +189,7 @@ Foam::functionObjects::energyTransport::kappa() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         kappa_
@@ -232,7 +232,7 @@ Foam::functionObjects::energyTransport::energyTransport
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimEnergy/dimTemperature/dimVolume, Zero)
diff --git a/src/functionObjects/utilities/solverInfo/solverInfo.C b/src/functionObjects/utilities/solverInfo/solverInfo.C
index 8808cfa560..60f0863aeb 100644
--- a/src/functionObjects/utilities/solverInfo/solverInfo.C
+++ b/src/functionObjects/utilities/solverInfo/solverInfo.C
@@ -213,7 +213,7 @@ bool Foam::functionObjects::solverInfo::write()
                     mesh_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 mesh_,
                 dimensionedScalar(dimless, Zero),
diff --git a/src/functionObjects/utilities/writeDictionary/writeDictionary.C b/src/functionObjects/utilities/writeDictionary/writeDictionary.C
index 7cc951ed54..bf4cb3443f 100644
--- a/src/functionObjects/utilities/writeDictionary/writeDictionary.C
+++ b/src/functionObjects/utilities/writeDictionary/writeDictionary.C
@@ -97,7 +97,7 @@ bool Foam::functionObjects::writeDictionary::tryDirectory
         obr_,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (dictIO.typeHeaderOk<IOdictionary>(true))
diff --git a/src/fvMotionSolver/motionDiffusivity/inverseVolume/inverseVolumeDiffusivity.C b/src/fvMotionSolver/motionDiffusivity/inverseVolume/inverseVolumeDiffusivity.C
index dac42d4d5a..4fdccec098 100644
--- a/src/fvMotionSolver/motionDiffusivity/inverseVolume/inverseVolumeDiffusivity.C
+++ b/src/fvMotionSolver/motionDiffusivity/inverseVolume/inverseVolumeDiffusivity.C
@@ -80,7 +80,7 @@ void Foam::inverseVolumeDiffusivity::correct()
             mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh(),
         dimless,
diff --git a/src/fvMotionSolver/pointPatchFields/derived/uniformInterpolatedDisplacement/uniformInterpolatedDisplacementPointPatchVectorField.C b/src/fvMotionSolver/pointPatchFields/derived/uniformInterpolatedDisplacement/uniformInterpolatedDisplacementPointPatchVectorField.C
index 8bdfdd3ef7..da4a2e1b33 100644
--- a/src/fvMotionSolver/pointPatchFields/derived/uniformInterpolatedDisplacement/uniformInterpolatedDisplacementPointPatchVectorField.C
+++ b/src/fvMotionSolver/pointPatchFields/derived/uniformInterpolatedDisplacement/uniformInterpolatedDisplacementPointPatchVectorField.C
@@ -135,7 +135,7 @@ void uniformInterpolatedDisplacementPointPatchVectorField::updateCoeffs()
                 pMesh(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
             if (io.typeHeaderOk<pointVectorField>(false))
             {
diff --git a/src/fvOptions/sources/derived/jouleHeatingSource/jouleHeatingSource.C b/src/fvOptions/sources/derived/jouleHeatingSource/jouleHeatingSource.C
index a57a0d8aa1..a548662098 100644
--- a/src/fvOptions/sources/derived/jouleHeatingSource/jouleHeatingSource.C
+++ b/src/fvOptions/sources/derived/jouleHeatingSource/jouleHeatingSource.C
@@ -64,7 +64,7 @@ Foam::fv::jouleHeatingSource::transformSigma
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedSymmTensor(sigmaLocal.dimensions(), Zero),
diff --git a/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.C b/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.C
index db2132bf0a..c5e44c1d72 100644
--- a/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.C
+++ b/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.C
@@ -528,7 +528,7 @@ Foam::KinematicCloud<CloudType>::KinematicCloud
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             c.UTrans_()
         )
@@ -544,7 +544,7 @@ Foam::KinematicCloud<CloudType>::KinematicCloud
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             c.UCoeff_()
         )
@@ -574,7 +574,7 @@ Foam::KinematicCloud<CloudType>::KinematicCloud
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     outputProperties_
@@ -587,7 +587,7 @@ Foam::KinematicCloud<CloudType>::KinematicCloud
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     solution_(mesh),
diff --git a/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloudI.H b/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloudI.H
index b3e903aa94..48bc7d5acc 100644
--- a/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloudI.H
+++ b/src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloudI.H
@@ -529,7 +529,7 @@ Foam::KinematicCloud<CloudType>::vDotSweep() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimTime, Zero),
@@ -567,7 +567,7 @@ Foam::KinematicCloud<CloudType>::theta() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero),
@@ -605,7 +605,7 @@ Foam::KinematicCloud<CloudType>::alpha() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero)
@@ -641,7 +641,7 @@ Foam::KinematicCloud<CloudType>::rhoEff() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimDensity, Zero)
diff --git a/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloud.C b/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloud.C
index f50cdf9c43..1062223379 100644
--- a/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloud.C
+++ b/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloud.C
@@ -177,7 +177,7 @@ Foam::ReactingCloud<CloudType>::ReactingCloud
                     this->db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 c.rhoTrans_[i]
             )
diff --git a/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloudI.H b/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloudI.H
index 0959710473..ef82d05462 100644
--- a/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloudI.H
+++ b/src/lagrangian/intermediate/clouds/Templates/ReactingCloud/ReactingCloudI.H
@@ -122,7 +122,7 @@ inline Foam::tmp<Foam::fvScalarMatrix> Foam::ReactingCloud<CloudType>::SYi
                         this->db(),
                         IOobject::NO_READ,
                         IOobject::NO_WRITE,
-                        false
+                        IOobject::NO_REGISTER
                     ),
                     this->mesh(),
                     dimensionedScalar(dimMass/dimTime/dimVolume, Zero)
@@ -170,7 +170,7 @@ Foam::ReactingCloud<CloudType>::Srho(const label i) const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar
@@ -205,7 +205,7 @@ Foam::ReactingCloud<CloudType>::Srho() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar
@@ -247,7 +247,7 @@ Foam::ReactingCloud<CloudType>::Srho(volScalarField& rho) const
                     this->db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 this->mesh(),
                 dimensionedScalar(dimMass/dimTime/dimVolume, Zero)
diff --git a/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.C b/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.C
index 8eacefd6aa..9f232d96c2 100644
--- a/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.C
+++ b/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.C
@@ -240,7 +240,7 @@ Foam::ThermoCloud<CloudType>::ThermoCloud
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             c.hsTrans()
         )
@@ -256,7 +256,7 @@ Foam::ThermoCloud<CloudType>::ThermoCloud
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             c.hsCoeff()
         )
@@ -275,7 +275,7 @@ Foam::ThermoCloud<CloudType>::ThermoCloud
                     this->db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 c.radAreaP()
             )
@@ -292,7 +292,7 @@ Foam::ThermoCloud<CloudType>::ThermoCloud
                     this->db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 c.radT4()
             )
@@ -309,7 +309,7 @@ Foam::ThermoCloud<CloudType>::ThermoCloud
                     this->db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 c.radAreaPT4()
             )
diff --git a/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloudI.H b/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloudI.H
index dac71f356e..e0dbbb8b58 100644
--- a/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloudI.H
+++ b/src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloudI.H
@@ -274,7 +274,7 @@ inline Foam::tmp<Foam::volScalarField> Foam::ThermoCloud<CloudType>::Ep() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
@@ -310,7 +310,7 @@ inline Foam::tmp<Foam::volScalarField> Foam::ThermoCloud<CloudType>::ap() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimless/dimLength, Zero)
@@ -347,7 +347,7 @@ Foam::ThermoCloud<CloudType>::sigmap() const
                 this->db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar(dimless/dimLength, Zero)
diff --git a/src/lagrangian/intermediate/submodels/MPPIC/AveragingMethods/Basic/Basic.C b/src/lagrangian/intermediate/submodels/MPPIC/AveragingMethods/Basic/Basic.C
index 63d7c4fffe..fd36a47760 100644
--- a/src/lagrangian/intermediate/submodels/MPPIC/AveragingMethods/Basic/Basic.C
+++ b/src/lagrangian/intermediate/submodels/MPPIC/AveragingMethods/Basic/Basic.C
@@ -76,7 +76,7 @@ void Foam::AveragingMethods::Basic<Type>::updateGrad()
             this->mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->mesh_,
         dimensioned<Type>(dimless, Zero),
diff --git a/src/lagrangian/intermediate/submodels/addOns/radiation/absorptionEmission/cloudAbsorptionEmission/cloudAbsorptionEmission.C b/src/lagrangian/intermediate/submodels/addOns/radiation/absorptionEmission/cloudAbsorptionEmission/cloudAbsorptionEmission.C
index 562a44fbdd..4dc91ac10e 100644
--- a/src/lagrangian/intermediate/submodels/addOns/radiation/absorptionEmission/cloudAbsorptionEmission/cloudAbsorptionEmission.C
+++ b/src/lagrangian/intermediate/submodels/addOns/radiation/absorptionEmission/cloudAbsorptionEmission/cloudAbsorptionEmission.C
@@ -83,7 +83,7 @@ Foam::radiation::cloudAbsorptionEmission::aDisp(const label) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
@@ -116,7 +116,7 @@ Foam::radiation::cloudAbsorptionEmission::eDisp(const label bandI) const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimless/dimLength, Zero)
@@ -138,7 +138,7 @@ Foam::radiation::cloudAbsorptionEmission::EDisp(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
diff --git a/src/lagrangian/intermediate/submodels/addOns/radiation/scatter/cloudScatter/cloudScatter.C b/src/lagrangian/intermediate/submodels/addOns/radiation/scatter/cloudScatter/cloudScatter.C
index 5b8c69d920..1a530c91fd 100644
--- a/src/lagrangian/intermediate/submodels/addOns/radiation/scatter/cloudScatter/cloudScatter.C
+++ b/src/lagrangian/intermediate/submodels/addOns/radiation/scatter/cloudScatter/cloudScatter.C
@@ -83,7 +83,7 @@ Foam::radiation::cloudScatter::sigmaEff() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
diff --git a/src/lagrangian/molecularDynamics/molecule/mdTools/createAutoCorrelationFunctions.H b/src/lagrangian/molecularDynamics/molecule/mdTools/createAutoCorrelationFunctions.H
index 3a33c6182d..7d956a5442 100644
--- a/src/lagrangian/molecularDynamics/molecule/mdTools/createAutoCorrelationFunctions.H
+++ b/src/lagrangian/molecularDynamics/molecule/mdTools/createAutoCorrelationFunctions.H
@@ -36,7 +36,7 @@ IOdictionary mdTransportProperitesDict
         mesh,
         IOobject::MUST_READ_IF_MODIFIED,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     )
 );
 
diff --git a/src/lagrangian/molecularDynamics/molecule/moleculeCloud/moleculeCloud.C b/src/lagrangian/molecularDynamics/molecule/moleculeCloud/moleculeCloud.C
index 8571efe9f1..9052b14a65 100644
--- a/src/lagrangian/molecularDynamics/molecule/moleculeCloud/moleculeCloud.C
+++ b/src/lagrangian/molecularDynamics/molecule/moleculeCloud/moleculeCloud.C
@@ -58,7 +58,7 @@ void Foam::moleculeCloud::buildConstProps()
             mesh_,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/lagrangian/molecularDynamics/potential/potential/potential.C b/src/lagrangian/molecularDynamics/potential/potential/potential.C
index f62987ca79..ff0725f6ca 100644
--- a/src/lagrangian/molecularDynamics/potential/potential/potential.C
+++ b/src/lagrangian/molecularDynamics/potential/potential/potential.C
@@ -131,7 +131,7 @@ void Foam::potential::potential::readPotentialDict()
                 mesh_,
                 IOobject::MUST_READ_IF_MODIFIED,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
     );
@@ -258,7 +258,7 @@ void Foam::potential::potential::readMdInitialiseDict
             mesh_,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/mesh/blockMesh/blockMesh/blockMeshTopology.C b/src/mesh/blockMesh/blockMesh/blockMeshTopology.C
index c264e96701..84ba7b5881 100644
--- a/src/mesh/blockMesh/blockMesh/blockMeshTopology.C
+++ b/src/mesh/blockMesh/blockMesh/blockMeshTopology.C
@@ -554,7 +554,7 @@ Foam::blockMesh::createTopology
             meshDescription.time(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pointField(vertices_),   // Use a copy of vertices
         getBlockShapes(),
diff --git a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/displacementMotionSolverMeshMover.C b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/displacementMotionSolverMeshMover.C
index d8a3798964..070d73e2c7 100644
--- a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/displacementMotionSolverMeshMover.C
+++ b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/displacementMotionSolverMeshMover.C
@@ -133,7 +133,7 @@ Foam::displacementMotionSolverMeshMover::displacementMotionSolverMeshMover
                     pointDisplacement.db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 dict
             ),
@@ -147,7 +147,7 @@ Foam::displacementMotionSolverMeshMover::displacementMotionSolverMeshMover
                     pointDisplacement.db(),
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 pointDisplacement.mesh()().points()
             )
diff --git a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/medialAxisMeshMover.C b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/medialAxisMeshMover.C
index d462e162d0..7db914643c 100644
--- a/src/mesh/snappyHexMesh/externalDisplacementMeshMover/medialAxisMeshMover.C
+++ b/src/mesh/snappyHexMesh/externalDisplacementMeshMover/medialAxisMeshMover.C
@@ -1293,7 +1293,7 @@ Foam::medialAxisMeshMover::medialAxisMeshMover
             pointDisplacement.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pMesh(),
         dimensionedVector(dimLength, Zero)
@@ -1307,7 +1307,7 @@ Foam::medialAxisMeshMover::medialAxisMeshMover
             pointDisplacement.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pMesh(),
         dimensionedScalar(dimless, Zero)
@@ -1321,7 +1321,7 @@ Foam::medialAxisMeshMover::medialAxisMeshMover
             pointDisplacement.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pMesh(),
         dimensionedScalar(dimLength, Zero)
@@ -1335,7 +1335,7 @@ Foam::medialAxisMeshMover::medialAxisMeshMover
             pointDisplacement.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pMesh(),
         dimensionedVector(dimLength, Zero)
diff --git a/src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C b/src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C
index b6f279b490..f945f0f369 100644
--- a/src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C
+++ b/src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C
@@ -1718,7 +1718,7 @@ Foam::meshRefinement::meshRefinement
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         labelList(mesh_.nFaces(), -1)
     ),
@@ -3590,8 +3590,8 @@ void Foam::meshRefinement::dumpRefinementLevel() const
                 mesh_.time().timeName(),
                 mesh_,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero),
@@ -3621,7 +3621,7 @@ void Foam::meshRefinement::dumpRefinementLevel() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pMesh,
             dimensionedScalar(dimless, Zero)
diff --git a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
index 2f31191ab6..57946636c1 100644
--- a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
+++ b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
@@ -3571,8 +3571,8 @@ void Foam::meshRefinement::zonify
                 timeName(),
                 mesh_,
                 IOobject::NO_READ,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero),
diff --git a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBlock.C b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBlock.C
index c1141c9e4a..f385d8000a 100644
--- a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBlock.C
+++ b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBlock.C
@@ -431,7 +431,7 @@ void Foam::meshRefinement::growSet
 //                mesh_,
 //                IOobject::NO_READ,
 //                IOobject::NO_WRITE,
-//                false
+//                IOobject::NO_REGISTER
 //            ),
 //            mesh_,
 //            dimensionedScalar
@@ -741,7 +741,7 @@ Foam::label Foam::meshRefinement::markProximityRefinementWave
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar
@@ -893,15 +893,10 @@ Foam::label Foam::meshRefinement::markProximityRefinementWave
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
-            dimensionedScalar
-            (
-                "zero",
-                dimensionSet(0, 1, 0, 0, 0),
-                0.0
-            )
+            dimensionedScalar(dimLength, Zero)
         );
         distance.field() = smallGapDistance;
         distance.correctBoundaryConditions();
diff --git a/src/mesh/snappyHexMesh/refinementFeatures/refinementFeatures.C b/src/mesh/snappyHexMesh/refinementFeatures/refinementFeatures.C
index ce8eb29cfb..4522e3e3a2 100644
--- a/src/mesh/snappyHexMesh/refinementFeatures/refinementFeatures.C
+++ b/src/mesh/snappyHexMesh/refinementFeatures/refinementFeatures.C
@@ -68,7 +68,7 @@ void Foam::refinementFeatures::read
             io.time(),                          // registry
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         );
 
         const fileName fName(typeFilePath<extendedFeatureEdgeMesh>(extFeatObj));
@@ -102,7 +102,7 @@ void Foam::refinementFeatures::read
                 io.time(),                          // registry
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
 
             const fileName fName(typeFilePath<featureEdgeMesh>(featObj));
diff --git a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
index 6297c58f2f..235591b6c0 100644
--- a/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
+++ b/src/mesh/snappyHexMesh/snappyHexMeshDriver/snappyLayerDriver.C
@@ -3246,8 +3246,8 @@ bool Foam::snappyLayerDriver::writeLayerData
                     mesh.time().timeName(),
                     mesh,
                     IOobject::NO_READ,
-                    IOobject::AUTO_WRITE,
-                    false
+                    IOobject::NO_WRITE,
+                    IOobject::NO_REGISTER
                 ),
                 mesh,
                 dimensionedScalar(dimless, Zero),
@@ -3286,8 +3286,8 @@ bool Foam::snappyLayerDriver::writeLayerData
                     mesh.time().timeName(),
                     mesh,
                     IOobject::NO_READ,
-                    IOobject::AUTO_WRITE,
-                    false
+                    IOobject::NO_WRITE,
+                    IOobject::NO_REGISTER
                 ),
                 mesh,
                 dimensionedScalar(dimless, Zero),
@@ -3314,8 +3314,8 @@ bool Foam::snappyLayerDriver::writeLayerData
                     mesh.time().timeName(),
                     mesh,
                     IOobject::NO_READ,
-                    IOobject::AUTO_WRITE,
-                    false
+                    IOobject::NO_WRITE,
+                    IOobject::NO_REGISTER
                 ),
                 mesh,
                 dimensionedScalar(dimless, Zero),
diff --git a/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatch.C b/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatch.C
index c0af94ad08..49d2cb4231 100644
--- a/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatch.C
+++ b/src/meshTools/AMIInterpolation/patches/cyclicACMI/cyclicACMIPolyPatch/cyclicACMIPolyPatch.C
@@ -575,7 +575,7 @@ Foam::cyclicACMIPolyPatch::cyclicACMIPolyPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     ),
@@ -613,7 +613,7 @@ Foam::cyclicACMIPolyPatch::cyclicACMIPolyPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     ),
@@ -655,7 +655,7 @@ Foam::cyclicACMIPolyPatch::cyclicACMIPolyPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     ),
@@ -694,7 +694,7 @@ Foam::cyclicACMIPolyPatch::cyclicACMIPolyPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     ),
@@ -739,7 +739,7 @@ Foam::cyclicACMIPolyPatch::cyclicACMIPolyPatch
             boundaryMesh().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         dimensionedScalar("time", dimTime, -GREAT)
     ),
diff --git a/src/meshTools/edgeMesh/edgeFormats/edgeMesh/edgeMeshFormat.C b/src/meshTools/edgeMesh/edgeFormats/edgeMesh/edgeMeshFormat.C
index 2f7c3625d0..1979081570 100644
--- a/src/meshTools/edgeMesh/edgeFormats/edgeMesh/edgeMeshFormat.C
+++ b/src/meshTools/edgeMesh/edgeFormats/edgeMesh/edgeMeshFormat.C
@@ -64,7 +64,7 @@ bool Foam::fileFormats::edgeMeshFormat::read
         *dummyTimePtr,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (!io.typeHeaderOk<featureEdgeMesh>(false))
@@ -156,7 +156,7 @@ void Foam::fileFormats::edgeMeshFormat::write
         *dummyTimePtr,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
     io.note() = "written " + clock::dateTime();
 
diff --git a/src/meshTools/edgeMesh/edgeFormats/vtk/VTKedgeFormat.C b/src/meshTools/edgeMesh/edgeFormats/vtk/VTKedgeFormat.C
index dee4aec216..eee6927bb9 100644
--- a/src/meshTools/edgeMesh/edgeFormats/vtk/VTKedgeFormat.C
+++ b/src/meshTools/edgeMesh/edgeFormats/vtk/VTKedgeFormat.C
@@ -69,7 +69,7 @@ bool Foam::fileFormats::VTKedgeFormat::read
             *dummyTimePtr,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/meshTools/edgeMesh/extendedEdgeMesh/extendedEdgeMeshFormat.C b/src/meshTools/edgeMesh/extendedEdgeMesh/extendedEdgeMeshFormat.C
index 23afe387c4..f33e32215b 100644
--- a/src/meshTools/edgeMesh/extendedEdgeMesh/extendedEdgeMeshFormat.C
+++ b/src/meshTools/edgeMesh/extendedEdgeMesh/extendedEdgeMeshFormat.C
@@ -62,7 +62,7 @@ bool Foam::fileFormats::extendedEdgeMeshFormat::read
         *dummyTimePtr,
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (!io.typeHeaderOk<extendedFeatureEdgeMesh>(false))
diff --git a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
index e671f9948d..f84ed8e4b6 100644
--- a/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
+++ b/src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H
@@ -213,7 +213,7 @@ Foam::mappedPatchBase::updateSampleMeshTime() const
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 )
             );
     }
@@ -239,7 +239,7 @@ Foam::mappedPatchBase::updateMeshTime() const
                     mesh,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 )
             );
     }
diff --git a/src/meshTools/searchableSurfaces/searchableExtrudedCircle/searchableExtrudedCircle.C b/src/meshTools/searchableSurfaces/searchableExtrudedCircle/searchableExtrudedCircle.C
index 46b3ea18e7..1e89d921c3 100644
--- a/src/meshTools/searchableSurfaces/searchableExtrudedCircle/searchableExtrudedCircle.C
+++ b/src/meshTools/searchableSurfaces/searchableExtrudedCircle/searchableExtrudedCircle.C
@@ -77,7 +77,7 @@ Foam::searchableExtrudedCircle::searchableExtrudedCircle
                 io.time(),                          // registry
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ).objectPath()
         )
     ),
diff --git a/src/meshTools/topoSet/cellSources/fieldToCell/fieldToCell.C b/src/meshTools/topoSet/cellSources/fieldToCell/fieldToCell.C
index 9d6377369c..16e273f665 100644
--- a/src/meshTools/topoSet/cellSources/fieldToCell/fieldToCell.C
+++ b/src/meshTools/topoSet/cellSources/fieldToCell/fieldToCell.C
@@ -186,8 +186,8 @@ void Foam::fieldToCell::applyToSet
         mesh().time().timeName(),
         mesh(),
         IOobject::MUST_READ,
-        IOobject::AUTO_WRITE,
-        false
+        IOobject::NO_WRITE,
+        IOobject::NO_REGISTER
     );
 
     // Note: should check for volScalarField but that introduces dependency
diff --git a/src/meshTools/topoSet/faceSources/holeToFace/holeToFace.C b/src/meshTools/topoSet/faceSources/holeToFace/holeToFace.C
index 45f028653f..a6d5640c1d 100644
--- a/src/meshTools/topoSet/faceSources/holeToFace/holeToFace.C
+++ b/src/meshTools/topoSet/faceSources/holeToFace/holeToFace.C
@@ -220,10 +220,10 @@ Foam::topoSetSource::addToUsageTable Foam::holeToFace::usage_
 //            fvm,
 //            IOobject::NO_READ,
 //            IOobject::NO_WRITE,
-//            false
+//            IOobject::NO_REGISTER
 //        ),
 //        fvm,
-//        dimensionedScalar("zero", dimless, scalar(0))
+//        dimensionedScalar(dimless, Zero)
 //    );
 //    forAll(labelFld, i)
 //    {
@@ -257,10 +257,10 @@ Foam::topoSetSource::addToUsageTable Foam::holeToFace::usage_
 //            fvm,
 //            IOobject::NO_READ,
 //            IOobject::NO_WRITE,
-//            false
+//            IOobject::NO_REGISTER
 //        ),
 //        fvm,
-//        dimensionedScalar("zero", dimless, scalar(0))
+//        dimensionedScalar(dimless, Zero)
 //    );
 //    for (label i = 0; i < mesh_.nInternalFaces(); i++)
 //    {
diff --git a/src/meshTools/topoSet/topoSets/topoBitSet.C b/src/meshTools/topoSet/topoSets/topoBitSet.C
index b814960212..56676ee943 100644
--- a/src/meshTools/topoSet/topoSets/topoBitSet.C
+++ b/src/meshTools/topoSet/topoSets/topoBitSet.C
@@ -124,9 +124,9 @@ Foam::topoBitSet::topoBitSet
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
-        0  // zero-sized (unallocated) labelHashSet
+        label(0)  // zero-sized (unallocated) labelHashSet
     ),
     selected_()
 {}
diff --git a/src/meshTools/topoSet/topoSets/topoBoolSet.C b/src/meshTools/topoSet/topoSets/topoBoolSet.C
index 77753f55cf..35268ec969 100644
--- a/src/meshTools/topoSet/topoSets/topoBoolSet.C
+++ b/src/meshTools/topoSet/topoSets/topoBoolSet.C
@@ -133,9 +133,9 @@ Foam::topoBoolSet::topoBoolSet
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
-        0  // zero-sized (unallocated) labelHashSet
+        label(0)  // zero-sized (unallocated) labelHashSet
     ),
     selected_()
 {}
diff --git a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethod/displacementMethod.C b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethod/displacementMethod.C
index 298fcd4f67..d0da1a7211 100644
--- a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethod/displacementMethod.C
+++ b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethod/displacementMethod.C
@@ -72,7 +72,7 @@ Foam::autoPtr<Foam::displacementMethod> Foam::displacementMethod::New
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
     word solverType(dynamicMeshDict.get<word>("solver"));
diff --git a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethoddisplacementLaplacian/displacementMethoddisplacementLaplacian.C b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethoddisplacementLaplacian/displacementMethoddisplacementLaplacian.C
index b454b84c5d..a3ab2291f8 100644
--- a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethoddisplacementLaplacian/displacementMethoddisplacementLaplacian.C
+++ b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethoddisplacementLaplacian/displacementMethoddisplacementLaplacian.C
@@ -89,16 +89,14 @@ displacementMethoddisplacementLaplacian::displacementMethoddisplacementLaplacian
     */
     resetFields_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 mesh.time().constant(),
                 mesh,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).subDict("displacementLaplacianCoeffs").getOrDefault<bool>
         (
diff --git a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodelasticityMotionSolver/displacementMethodelasticityMotionSolver.C b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodelasticityMotionSolver/displacementMethodelasticityMotionSolver.C
index 1362ffb7f4..f26dc3b132 100644
--- a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodelasticityMotionSolver/displacementMethodelasticityMotionSolver.C
+++ b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodelasticityMotionSolver/displacementMethodelasticityMotionSolver.C
@@ -78,16 +78,14 @@ displacementMethodelasticityMotionSolver
     */
     resetFields_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 mesh.time().constant(),
                 mesh,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).subDict("elasticityMotionSolverCoeffs").getOrDefault<bool>
         (
diff --git a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodlaplacianMotionSolver/displacementMethodlaplacianMotionSolver.C b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodlaplacianMotionSolver/displacementMethodlaplacianMotionSolver.C
index 1b0a71920d..873aff3d79 100644
--- a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodlaplacianMotionSolver/displacementMethodlaplacianMotionSolver.C
+++ b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodlaplacianMotionSolver/displacementMethodlaplacianMotionSolver.C
@@ -77,16 +77,14 @@ displacementMethodlaplacianMotionSolver::displacementMethodlaplacianMotionSolver
     */
     resetFields_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 mesh.time().constant(),
                 mesh,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).subDict("laplacianMotionSolverCoeffs").getOrDefault<bool>
         (
diff --git a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodvelocityLaplacian/displacementMethodvelocityLaplacian.C b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodvelocityLaplacian/displacementMethodvelocityLaplacian.C
index 9c0cdcdb7f..c72518a4d7 100644
--- a/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodvelocityLaplacian/displacementMethodvelocityLaplacian.C
+++ b/src/optimisation/adjointOptimisation/adjoint/displacementMethod/displacementMethodvelocityLaplacian/displacementMethodvelocityLaplacian.C
@@ -84,16 +84,14 @@ displacementMethodvelocityLaplacian::displacementMethodvelocityLaplacian
     */
     resetFields_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 mesh.time().constant(),
                 mesh,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).subDict("velocityLaplacianCoeffs").getOrDefault<bool>
         (
diff --git a/src/optimisation/adjointOptimisation/adjoint/finiteVolume/interpolation/surfaceInterpolation/schemes/limitedSchemes/linearUpwindNormal/linearUpwindNormal.C b/src/optimisation/adjointOptimisation/adjoint/finiteVolume/interpolation/surfaceInterpolation/schemes/limitedSchemes/linearUpwindNormal/linearUpwindNormal.C
index ddfedb03f4..86f201430f 100644
--- a/src/optimisation/adjointOptimisation/adjoint/finiteVolume/interpolation/surfaceInterpolation/schemes/limitedSchemes/linearUpwindNormal/linearUpwindNormal.C
+++ b/src/optimisation/adjointOptimisation/adjoint/finiteVolume/interpolation/surfaceInterpolation/schemes/limitedSchemes/linearUpwindNormal/linearUpwindNormal.C
@@ -52,7 +52,7 @@ Foam::linearUpwindNormal<Type>::correction
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensioned<Type>(vf.dimensions(), Zero)
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/adjointSensitivity/incompressible/adjointEikonalSolver/adjointEikonalSolverIncompressible.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/adjointSensitivity/incompressible/adjointEikonalSolver/adjointEikonalSolverIncompressible.C
index 41348f1bf6..85ad4b6d32 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/adjointSensitivity/incompressible/adjointEikonalSolver/adjointEikonalSolverIncompressible.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/adjointSensitivity/incompressible/adjointEikonalSolver/adjointEikonalSolverIncompressible.C
@@ -89,7 +89,7 @@ tmp<surfaceScalarField> adjointEikonalSolver::computeYPhi()
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedVector(dimless, Zero),
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/lineSearch/lineSearch/lineSearch.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/lineSearch/lineSearch/lineSearch.C
index 3334a96dd0..0701dae6eb 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/lineSearch/lineSearch/lineSearch.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/lineSearch/lineSearch/lineSearch.C
@@ -62,7 +62,7 @@ Foam::lineSearch::lineSearch(const dictionary& dict, const Time& time)
             time,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     directionalDeriv_(Zero),
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementBezier/optMeshMovementBezier.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementBezier/optMeshMovementBezier.C
index 001e950b18..11c0e38448 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementBezier/optMeshMovementBezier.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementBezier/optMeshMovementBezier.C
@@ -108,7 +108,7 @@ Foam::optMeshMovementBezier::optMeshMovementBezier
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pointMesh::New(mesh),
         dimensionedVector(dimless, Zero)
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementVolumetricBSplinesExternalMotionSolver/optMeshMovementVolumetricBSplinesExternalMotionSolver.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementVolumetricBSplinesExternalMotionSolver/optMeshMovementVolumetricBSplinesExternalMotionSolver.C
index 46eeadedea..cdde7b1a57 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementVolumetricBSplinesExternalMotionSolver/optMeshMovementVolumetricBSplinesExternalMotionSolver.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/optMeshMovement/optMeshMovementVolumetricBSplinesExternalMotionSolver/optMeshMovementVolumetricBSplinesExternalMotionSolver.C
@@ -126,7 +126,7 @@ optMeshMovementVolumetricBSplinesExternalMotionSolver
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pointMesh::New(mesh),
         dimensionedVector(dimless, Zero)
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationManager/optimisationManager/optimisationManager.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationManager/optimisationManager/optimisationManager.C
index a4b111fffd..caae3b7b09 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationManager/optimisationManager/optimisationManager.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationManager/optimisationManager/optimisationManager.C
@@ -162,9 +162,9 @@ Foam::autoPtr<Foam::optimisationManager> Foam::optimisationManager::New
             "optimisationDict",
             mesh.time().system(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationType/incompressible/shapeOptimisation/shapeOptimisationIncompressible.C b/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationType/incompressible/shapeOptimisation/shapeOptimisationIncompressible.C
index 31def83c64..7a71d5ea6b 100644
--- a/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationType/incompressible/shapeOptimisation/shapeOptimisationIncompressible.C
+++ b/src/optimisation/adjointOptimisation/adjoint/optimisation/optimisationType/incompressible/shapeOptimisation/shapeOptimisationIncompressible.C
@@ -73,7 +73,7 @@ void shapeOptimisation::updateDesignVariables(scalarField& correction)
                     mesh_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 mesh_.points()
             );
diff --git a/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/controlPointsDefinition/fromFile/fromFile.C b/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/controlPointsDefinition/fromFile/fromFile.C
index 7400a87359..2dcb5dc417 100644
--- a/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/controlPointsDefinition/fromFile/fromFile.C
+++ b/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/controlPointsDefinition/fromFile/fromFile.C
@@ -63,7 +63,7 @@ void Foam::fromFile::computeControlPoints()
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/volBSplinesBase/volBSplinesBase.C b/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/volBSplinesBase/volBSplinesBase.C
index c73b7835ad..c5515ba843 100644
--- a/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/volBSplinesBase/volBSplinesBase.C
+++ b/src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/volBSplinesBase/volBSplinesBase.C
@@ -60,7 +60,7 @@ volBSplinesBase::volBSplinesBase
                 mesh,
                 IOobject::MUST_READ_IF_MODIFIED,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         ).subDict("volumetricBSplinesMotionSolverCoeffs")
     );
diff --git a/src/optimisation/adjointOptimisation/adjoint/solvers/variablesSet/variablesSet/variablesSetTemplates.C b/src/optimisation/adjointOptimisation/adjoint/solvers/variablesSet/variablesSet/variablesSetTemplates.C
index 1210020825..92bc073275 100644
--- a/src/optimisation/adjointOptimisation/adjoint/solvers/variablesSet/variablesSet/variablesSetTemplates.C
+++ b/src/optimisation/adjointOptimisation/adjoint/solvers/variablesSet/variablesSet/variablesSetTemplates.C
@@ -58,7 +58,7 @@ GeometricField<Type, PatchField, GeoMesh>* variablesSet::allocateNamedField
             io.db(),
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         fieldType::typeName
     );
@@ -313,7 +313,7 @@ void variablesSet::renameTurbulenceField
         mesh,
         IOobject::MUST_READ,
         IOobject::AUTO_WRITE,
-        false // Do not register
+        IOobject::NO_REGISTER
     );
 
     if (headerCustomName.typeHeaderOk<VolFieldType>(true))
diff --git a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointRAS/adjointRASModel/adjointRASModel.C b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointRAS/adjointRASModel/adjointRASModel.C
index de37b7e926..f9e1d85bf9 100644
--- a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointRAS/adjointRASModel/adjointRASModel.C
+++ b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointRAS/adjointRASModel/adjointRASModel.C
@@ -175,9 +175,9 @@ autoPtr<adjointRASModel> adjointRASModel::New
             "adjointRASProperties",
             primalVars.U().time().constant(),
             primalVars.U().db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointTurbulenceModel/adjointTurbulenceModel.C b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointTurbulenceModel/adjointTurbulenceModel.C
index 8b56a910ef..6056adf1bd 100644
--- a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointTurbulenceModel/adjointTurbulenceModel.C
+++ b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/incompressibleAdjoint/adjointTurbulenceModel/adjointTurbulenceModel.C
@@ -90,9 +90,9 @@ autoPtr<adjointTurbulenceModel> adjointTurbulenceModel::New
                 "turbulenceProperties",
                 primalVars.U().time().constant(),
                 primalVars.U().db(),
-                IOobject::MUST_READ_IF_MODIFIED,
+                IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             )
         ).get<word>("simulationType")
     );
diff --git a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/turbulenceModelVariables/RAS/RASModelVariables/RASModelVariables.C b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/turbulenceModelVariables/RAS/RASModelVariables/RASModelVariables.C
index d41edb2842..5816590841 100644
--- a/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/turbulenceModelVariables/RAS/RASModelVariables/RASModelVariables.C
+++ b/src/optimisation/adjointOptimisation/adjoint/turbulenceModels/turbulenceModelVariables/RAS/RASModelVariables/RASModelVariables.C
@@ -255,9 +255,9 @@ autoPtr<RASModelVariables> RASModelVariables::New
             turbulenceModel::propertiesName,
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/overset/cellCellStencil/cellCellStencil/cellCellStencil.C b/src/overset/cellCellStencil/cellCellStencil/cellCellStencil.C
index 7a92b12bb1..b41f93a8e6 100644
--- a/src/overset/cellCellStencil/cellCellStencil/cellCellStencil.C
+++ b/src/overset/cellCellStencil/cellCellStencil/cellCellStencil.C
@@ -138,7 +138,7 @@ const Foam::labelIOList& Foam::cellCellStencil::zoneID(const fvMesh& mesh)
                 mesh,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh
         );
diff --git a/src/overset/cellCellStencil/cellCellStencil/cellCellStencilTemplates.C b/src/overset/cellCellStencil/cellCellStencil/cellCellStencilTemplates.C
index deee6f06c1..f0834d5dba 100644
--- a/src/overset/cellCellStencil/cellCellStencil/cellCellStencilTemplates.C
+++ b/src/overset/cellCellStencil/cellCellStencil/cellCellStencilTemplates.C
@@ -167,7 +167,7 @@ Foam::cellCellStencil::createField
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, Zero),
diff --git a/src/overset/cellCellStencil/cellVolumeWeight/cellVolumeWeightCellCellStencil.C b/src/overset/cellCellStencil/cellVolumeWeight/cellVolumeWeightCellCellStencil.C
index 96a9247d78..f678ec9e25 100644
--- a/src/overset/cellCellStencil/cellVolumeWeight/cellVolumeWeightCellCellStencil.C
+++ b/src/overset/cellCellStencil/cellVolumeWeight/cellVolumeWeightCellCellStencil.C
@@ -530,7 +530,7 @@ Foam::cellCellStencils::cellVolumeWeight::cellVolumeWeight
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimless, Zero),
@@ -566,7 +566,7 @@ Foam::cellCellStencils::cellVolumeWeight::cellVolumeWeight
         mesh_,
         IOobject::READ_IF_PRESENT,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
     if (io.typeHeaderOk<volScalarField>(true))
     {
diff --git a/src/overset/cellCellStencil/inverseDistance/inverseDistanceCellCellStencil.C b/src/overset/cellCellStencil/inverseDistance/inverseDistanceCellCellStencil.C
index aef5b8d6ab..1f49f27ff8 100644
--- a/src/overset/cellCellStencil/inverseDistance/inverseDistanceCellCellStencil.C
+++ b/src/overset/cellCellStencil/inverseDistance/inverseDistanceCellCellStencil.C
@@ -1732,7 +1732,7 @@ Foam::cellCellStencils::inverseDistance::inverseDistance
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimless, Zero),
@@ -1762,7 +1762,7 @@ Foam::cellCellStencils::inverseDistance::inverseDistance
         mesh_,
         IOobject::READ_IF_PRESENT,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
     if (io.typeHeaderOk<volScalarField>(true))
     {
diff --git a/src/overset/oversetFvMesh/oversetFvMeshBase.C b/src/overset/oversetFvMesh/oversetFvMeshBase.C
index ade7d4fe2e..3832a282ac 100644
--- a/src/overset/oversetFvMesh/oversetFvMeshBase.C
+++ b/src/overset/oversetFvMesh/oversetFvMeshBase.C
@@ -441,7 +441,7 @@ void Foam::oversetFvMeshBase::writeAgglomeration
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero)
@@ -496,7 +496,7 @@ void Foam::oversetFvMeshBase::writeAgglomeration
                     mesh_,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 mesh_,
                 dimensionedScalar(dimless, Zero)
@@ -652,7 +652,7 @@ bool Foam::oversetFvMeshBase::writeObject
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero),
@@ -676,7 +676,7 @@ bool Foam::oversetFvMeshBase::writeObject
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero),
@@ -716,7 +716,7 @@ bool Foam::oversetFvMeshBase::writeObject
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar("minOne", dimless, scalar(-1)),
diff --git a/src/overset/oversetFvMesh/oversetFvMeshBaseTemplates.C b/src/overset/oversetFvMesh/oversetFvMeshBaseTemplates.C
index c387f26308..4805fec67e 100644
--- a/src/overset/oversetFvMesh/oversetFvMeshBaseTemplates.C
+++ b/src/overset/oversetFvMesh/oversetFvMeshBaseTemplates.C
@@ -755,7 +755,7 @@ Foam::SolverPerformance<Type> Foam::oversetFvMeshBase::solveOverset
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero)
diff --git a/src/parallel/decompose/decompose/decompositionModel.C b/src/parallel/decompose/decompose/decompositionModel.C
index d18b4422dd..074e83c6f2 100644
--- a/src/parallel/decompose/decompose/decompositionModel.C
+++ b/src/parallel/decompose/decompose/decompositionModel.C
@@ -67,7 +67,7 @@ Foam::decompositionModel::decompositionModel
                 mesh.thisDb(),
                 (fallback ? IOobject::READ_IF_PRESENT : IOobject::MUST_READ),
                 IOobject::NO_WRITE,
-                false,  //io.registerObject(),
+                IOobject::NO_REGISTER,
                 true    //io.globalObject()
             ),
             decompDictFile
diff --git a/src/parallel/decompose/decompose/dimFieldDecomposerTemplates.C b/src/parallel/decompose/decompose/dimFieldDecomposerTemplates.C
index 4f7c736975..de5e73cc7f 100644
--- a/src/parallel/decompose/decompose/dimFieldDecomposerTemplates.C
+++ b/src/parallel/decompose/decompose/dimFieldDecomposerTemplates.C
@@ -51,7 +51,7 @@ Foam::dimFieldDecomposer::decomposeField
                 procMesh_.thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             procMesh_,
             field.dimensions(),
diff --git a/src/parallel/decompose/decompose/fvFieldDecomposerTemplates.C b/src/parallel/decompose/decompose/fvFieldDecomposerTemplates.C
index b9d93c6b9a..b845b0c38f 100644
--- a/src/parallel/decompose/decompose/fvFieldDecomposerTemplates.C
+++ b/src/parallel/decompose/decompose/fvFieldDecomposerTemplates.C
@@ -58,7 +58,7 @@ Foam::fvFieldDecomposer::decomposeField
                 procMesh_.thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             procMesh_,
             field.dimensions(),
diff --git a/src/parallel/decompose/decompose/lagrangianFieldDecomposerTemplates.C b/src/parallel/decompose/decompose/lagrangianFieldDecomposerTemplates.C
index 7cfd54cdd0..1a08a181e0 100644
--- a/src/parallel/decompose/decompose/lagrangianFieldDecomposerTemplates.C
+++ b/src/parallel/decompose/decompose/lagrangianFieldDecomposerTemplates.C
@@ -50,7 +50,7 @@ Foam::lagrangianFieldDecomposer::decomposeField
             procMesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         // Mapping internal field values
         Field<Type>(field, particleIndices_)
@@ -77,7 +77,7 @@ Foam::lagrangianFieldDecomposer::decomposeFieldField
             procMesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         // Mapping internal field values
         Field<Field<Type>>(field, particleIndices_)
diff --git a/src/parallel/decompose/decompose/pointFieldDecomposerTemplates.C b/src/parallel/decompose/decompose/pointFieldDecomposerTemplates.C
index 5fa9e405b0..b42fbc1a21 100644
--- a/src/parallel/decompose/decompose/pointFieldDecomposerTemplates.C
+++ b/src/parallel/decompose/decompose/pointFieldDecomposerTemplates.C
@@ -86,7 +86,7 @@ Foam::pointFieldDecomposer::decomposeField
                 procMesh_.thisDb(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             procMesh_,
             field.dimensions(),
diff --git a/src/parallel/decompose/decompositionMethods/manualDecomp/manualDecomp.C b/src/parallel/decompose/decompositionMethods/manualDecomp/manualDecomp.C
index 39af4983cd..0c02723cd5 100644
--- a/src/parallel/decompose/decompositionMethods/manualDecomp/manualDecomp.C
+++ b/src/parallel/decompose/decompositionMethods/manualDecomp/manualDecomp.C
@@ -69,16 +69,17 @@ Foam::labelList Foam::manualDecomp::decompose
     const scalarField& pointWeights
 ) const
 {
-    labelIOList finalDecomp
+    labelList finalDecomp
     (
-        IOobject
+        labelIOList::readContents
         (
-            dataFile_,
-            mesh.facesInstance(),
-            mesh,
-            IOobject::MUST_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject
+            (
+                dataFile_,
+                mesh.facesInstance(),
+                mesh.thisDb(),
+                IOobject::MUST_READ
+            )
         )
     );
 
@@ -95,21 +96,21 @@ Foam::labelList Foam::manualDecomp::decompose
             << exit(FatalError);
     }
 
-    const label minVal = min(finalDecomp);
-    const label maxVal = max(finalDecomp);
 
-    if (minVal < 0 || maxVal >= nDomains_)
+    const MinMax<label> range = minMax(finalDecomp);
+
+    if (range.min() < 0 || range.max() >= nDomains_)
     {
         FatalErrorInFunction
             << "According to the decomposition, cells assigned to "
             << "impossible processor numbers.  Min processor = "
-            << minVal << " Max processor = " << maxVal
+            << range.min() << " Max processor = " << range.max()
             << ".\n" << "Manual decomposition data read from file "
             << dataFile_ << "." << endl
             << exit(FatalError);
     }
 
-    return std::move(finalDecomp);
+    return finalDecomp;
 }
 
 
diff --git a/src/parallel/decompose/faDecompose/faMeshDecomposition.C b/src/parallel/decompose/faDecompose/faMeshDecomposition.C
index ae96a5bc63..3ab6a59f60 100644
--- a/src/parallel/decompose/faDecompose/faMeshDecomposition.C
+++ b/src/parallel/decompose/faDecompose/faMeshDecomposition.C
@@ -74,7 +74,7 @@ void Foam::faMeshDecomposition::distributeFaces()
             procFvMesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false  // not registered
+            IOobject::NO_REGISTER
         );
 
 
@@ -256,7 +256,7 @@ void Foam::faMeshDecomposition::decomposeMesh()
             procFvMesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false  // not registered
+            IOobject::NO_REGISTER
         );
 
 
@@ -1326,7 +1326,7 @@ bool Foam::faMeshDecomposition::writeDecomposition()
             procMesh.thisDb(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false  // not registered
+            IOobject::NO_REGISTER
         );
 
         // pointProcAddressing
diff --git a/src/parallel/reconstruct/faReconstruct/faMeshReconstructor.C b/src/parallel/reconstruct/faReconstruct/faMeshReconstructor.C
index 5e88cac729..14f834ec56 100644
--- a/src/parallel/reconstruct/faReconstruct/faMeshReconstructor.C
+++ b/src/parallel/reconstruct/faReconstruct/faMeshReconstructor.C
@@ -672,7 +672,7 @@ void Foam::faMeshReconstructor::writeAddressing(const word& timeName) const
         procMesh_.thisDb(),
         IOobject::NO_READ,
         IOobject::NO_WRITE,
-        false  // not registered
+        IOobject::NO_REGISTER
     );
 
     // boundaryProcAddressing
diff --git a/src/parallel/reconstruct/reconstruct/processorMeshes.C b/src/parallel/reconstruct/reconstruct/processorMeshes.C
index ff4c104dc7..06fa7cf83e 100644
--- a/src/parallel/reconstruct/reconstruct/processorMeshes.C
+++ b/src/parallel/reconstruct/reconstruct/processorMeshes.C
@@ -195,7 +195,7 @@ void Foam::processorMeshes::reconstructPoints(fvMesh& mesh)
                     meshes_[proci].thisDb(),
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false  // not registered
+                    IOobject::NO_REGISTER
                 )
             )
         );
diff --git a/src/phaseSystemModels/multiphaseEuler/multiphaseSystem/interfacialModels/dragModels/interface/interface.C b/src/phaseSystemModels/multiphaseEuler/multiphaseSystem/interfacialModels/dragModels/interface/interface.C
index 24f6c4afb2..4f4e171057 100644
--- a/src/phaseSystemModels/multiphaseEuler/multiphaseSystem/interfacialModels/dragModels/interface/interface.C
+++ b/src/phaseSystemModels/multiphaseEuler/multiphaseSystem/interfacialModels/dragModels/interface/interface.C
@@ -79,7 +79,7 @@ Foam::tmp<Foam::volScalarField> Foam::multiphaseEuler::dragModels::interface::K
             Ur.mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         Ur.mesh(),
         dimensionedScalar(dimDensity/dimTime, Zero)
diff --git a/src/phaseSystemModels/multiphaseInter/phasesSystem/multiphaseSystem/multiphaseSystemNew.C b/src/phaseSystemModels/multiphaseInter/phasesSystem/multiphaseSystem/multiphaseSystemNew.C
index 191af99c2e..e18913a5c4 100644
--- a/src/phaseSystemModels/multiphaseInter/phasesSystem/multiphaseSystem/multiphaseSystemNew.C
+++ b/src/phaseSystemModels/multiphaseInter/phasesSystem/multiphaseSystem/multiphaseSystemNew.C
@@ -42,9 +42,9 @@ Foam::multiphaseInter::multiphaseSystem::New
             phasePropertiesName,
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/phaseSystemModels/reactingEuler/multiphaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C b/src/phaseSystemModels/reactingEuler/multiphaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
index 92175160ba..1ecb0a60cf 100644
--- a/src/phaseSystemModels/reactingEuler/multiphaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
+++ b/src/phaseSystemModels/reactingEuler/multiphaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
@@ -136,10 +136,10 @@ Foam::BlendedInterfacialModel<ModelType>::evaluate
                 phase1_.mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             phase1_.mesh(),
-            dimensioned<Type>("zero", dims, Zero)
+            dimensioned<Type>(dims, Zero)
         )
     );
 
diff --git a/src/phaseSystemModels/reactingEuler/multiphaseSystem/multiphaseSystem/multiphaseSystemNew.C b/src/phaseSystemModels/reactingEuler/multiphaseSystem/multiphaseSystem/multiphaseSystemNew.C
index 3baa96c41a..bb7a2bf8b8 100644
--- a/src/phaseSystemModels/reactingEuler/multiphaseSystem/multiphaseSystem/multiphaseSystemNew.C
+++ b/src/phaseSystemModels/reactingEuler/multiphaseSystem/multiphaseSystem/multiphaseSystemNew.C
@@ -42,9 +42,9 @@ Foam::autoPtr<Foam::multiphaseSystem> Foam::multiphaseSystem::New
             propertiesName,
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/phaseSystemModels/reactingEuler/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C b/src/phaseSystemModels/reactingEuler/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
index c1851d54a2..b0aac1aa02 100644
--- a/src/phaseSystemModels/reactingEuler/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
+++ b/src/phaseSystemModels/reactingEuler/twoPhaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
@@ -131,10 +131,10 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::nu
                 phase.mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             phase.mesh(),
-            dimensionedScalar(dimensionSet(0, 2, -1, 0, 0))
+            dimensionedScalar(dimensionSet(0, 2, -1, 0, 0), Zero)
         )
     );
 
diff --git a/src/phaseSystemModels/reactingEuler/twoPhaseSystem/twoPhaseSystemNew.C b/src/phaseSystemModels/reactingEuler/twoPhaseSystem/twoPhaseSystemNew.C
index a5a759abf3..b97587a0bf 100644
--- a/src/phaseSystemModels/reactingEuler/twoPhaseSystem/twoPhaseSystemNew.C
+++ b/src/phaseSystemModels/reactingEuler/twoPhaseSystem/twoPhaseSystemNew.C
@@ -43,9 +43,9 @@ Foam::twoPhaseSystem::New
             propertiesName,
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C b/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C
index 4d7c1adafb..170d0d4df3 100644
--- a/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C
+++ b/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/JohnsonJacksonSchaeffer/JohnsonJacksonSchaefferFrictionalStress.C
@@ -141,7 +141,7 @@ JohnsonJacksonSchaeffer::nu
                 phase.mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             phase.mesh(),
             dimensionedScalar(dimensionSet(0, 2, -1, 0, 0), Zero)
diff --git a/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C b/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
index cf14452f2e..c621651753 100644
--- a/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
+++ b/src/phaseSystemModels/twoPhaseEuler/phaseCompressibleTurbulenceModels/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
@@ -131,7 +131,7 @@ Foam::kineticTheoryModels::frictionalStressModels::Schaeffer::nu
                 phase.mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             phase.mesh(),
             dimensionedScalar(dimensionSet(0, 2, -1, 0, 0), Zero)
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
index 89033668c5..c9f207655d 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C
@@ -151,7 +151,7 @@ Foam::BlendedInterfacialModel<modelType>::K() const
                 pair_.phase1().mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pair_.phase1().mesh(),
             dimensionedScalar(modelType::dimK, Zero)
@@ -219,7 +219,7 @@ Foam::BlendedInterfacialModel<modelType>::Kf() const
                 pair_.phase1().mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pair_.phase1().mesh(),
             dimensionedScalar(modelType::dimK, Zero)
@@ -280,7 +280,7 @@ Foam::BlendedInterfacialModel<modelType>::F() const
             pair_.phase1().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pair_.phase1().mesh(),
         dimensioned<Type>(modelType::dimF, Zero)
@@ -345,7 +345,7 @@ Foam::BlendedInterfacialModel<modelType>::Ff() const
             pair_.phase1().mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pair_.phase1().mesh(),
         dimensionedScalar(modelType::dimF*dimArea, Zero)
@@ -408,7 +408,7 @@ Foam::BlendedInterfacialModel<modelType>::D() const
                 pair_.phase1().mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pair_.phase1().mesh(),
             dimensionedScalar(modelType::dimD, Zero)
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/diameterModels/constantDiameter/constantDiameter.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/diameterModels/constantDiameter/constantDiameter.C
index cc3026fac3..c6f0a03f7b 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/diameterModels/constantDiameter/constantDiameter.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/diameterModels/constantDiameter/constantDiameter.C
@@ -80,7 +80,7 @@ Foam::tmp<Foam::volScalarField> Foam::diameterModels::constant::d() const
                 phase_.U().mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             phase_.U().mesh(),
             d_
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/liftModels/noLift/noLift.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/liftModels/noLift/noLift.C
index c3bfe74874..2b540ed3fa 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/liftModels/noLift/noLift.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/liftModels/noLift/noLift.C
@@ -74,7 +74,7 @@ Foam::tmp<Foam::volScalarField> Foam::liftModels::noLift::Cl() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimless, Zero)
@@ -95,7 +95,7 @@ Foam::tmp<Foam::volVectorField> Foam::liftModels::noLift::F() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedVector(dimF, Zero)
@@ -116,7 +116,7 @@ Foam::tmp<Foam::surfaceScalarField> Foam::liftModels::noLift::Ff() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimF*dimArea, Zero)
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/turbulentDispersionModels/noTurbulentDispersion/noTurbulentDispersion.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/turbulentDispersionModels/noTurbulentDispersion/noTurbulentDispersion.C
index 83e7f5628d..2d3180152d 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/turbulentDispersionModels/noTurbulentDispersion/noTurbulentDispersion.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/turbulentDispersionModels/noTurbulentDispersion/noTurbulentDispersion.C
@@ -81,7 +81,7 @@ Foam::turbulentDispersionModels::noTurbulentDispersion::D() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedScalar(dimD, Zero)
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/virtualMassModels/constantVirtualMassCoefficient/constantVirtualMassCoefficient.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/virtualMassModels/constantVirtualMassCoefficient/constantVirtualMassCoefficient.C
index 5436d22970..0c8a3bff33 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/virtualMassModels/constantVirtualMassCoefficient/constantVirtualMassCoefficient.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/virtualMassModels/constantVirtualMassCoefficient/constantVirtualMassCoefficient.C
@@ -86,7 +86,7 @@ Foam::virtualMassModels::constantVirtualMassCoefficient::Cvm() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             Cvm_
diff --git a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/wallLubricationModels/noWallLubrication/noWallLubrication.C b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/wallLubricationModels/noWallLubrication/noWallLubrication.C
index 5f61de5d47..4eb415f7e4 100644
--- a/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/wallLubricationModels/noWallLubrication/noWallLubrication.C
+++ b/src/phaseSystemModels/twoPhaseEuler/twoPhaseSystem/interfacialModels/wallLubricationModels/noWallLubrication/noWallLubrication.C
@@ -80,7 +80,7 @@ Foam::wallLubricationModels::noWallLubrication::Fi() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedVector(dimF, Zero)
@@ -102,7 +102,7 @@ Foam::wallLubricationModels::noWallLubrication::F() const
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensionedVector(dimF, Zero)
diff --git a/src/regionFaModels/KirchhoffShell/KirchhoffShell.C b/src/regionFaModels/KirchhoffShell/KirchhoffShell.C
index 675f82f8de..fa9a645c98 100644
--- a/src/regionFaModels/KirchhoffShell/KirchhoffShell.C
+++ b/src/regionFaModels/KirchhoffShell/KirchhoffShell.C
@@ -293,7 +293,7 @@ const tmp<areaScalarField> KirchhoffShell::rho() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             regionMesh(),
             dimensionedScalar("rho", dimDensity, solid().rho()),
diff --git a/src/regionFaModels/thermalShell/thermalShell.C b/src/regionFaModels/thermalShell/thermalShell.C
index 065a1d0463..9d7fe5855d 100644
--- a/src/regionFaModels/thermalShell/thermalShell.C
+++ b/src/regionFaModels/thermalShell/thermalShell.C
@@ -195,7 +195,7 @@ const tmp<areaScalarField> thermalShell::Cp() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             regionMesh(),
             dimensionedScalar(dimEnergy/dimTemperature/dimMass, thermo_.Cp()),
@@ -218,7 +218,7 @@ const tmp<areaScalarField> thermalShell::rho() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             regionMesh(),
             dimensionedScalar(dimDensity, thermo_.rho()),
@@ -241,7 +241,7 @@ const tmp<areaScalarField> thermalShell::kappa() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             regionMesh(),
             dimensionedScalar
diff --git a/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelNew.C b/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelNew.C
index 2becf98f13..74b3a36f70 100644
--- a/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelNew.C
+++ b/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelNew.C
@@ -56,7 +56,7 @@ autoPtr<pyrolysisModel> pyrolysisModel::New
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/regionModels/surfaceFilmModels/functionObjects/filmFlux/filmFlux.C b/src/regionModels/surfaceFilmModels/functionObjects/filmFlux/filmFlux.C
index 73ff001d85..0cc9c2005b 100644
--- a/src/regionModels/surfaceFilmModels/functionObjects/filmFlux/filmFlux.C
+++ b/src/regionModels/surfaceFilmModels/functionObjects/filmFlux/filmFlux.C
@@ -125,7 +125,7 @@ bool Foam::functionObjects::filmFlux::execute()
             filmMesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         filmMesh,
         dimensionedScalar(dimLength, Zero),
diff --git a/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C b/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
index 3e624c271e..09763a0dbc 100644
--- a/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
+++ b/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
@@ -807,8 +807,8 @@ kinematicSingleLayer::kinematicSingleLayer
                 time().timeName(),
                 regionMesh(),
                 IOobject::READ_IF_PRESENT,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             fvc::flux(deltaRho_*U_)
         );
@@ -1093,7 +1093,7 @@ tmp<volScalarField::Internal> kinematicSingleLayer::Srho() const
             primaryMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         primaryMesh(),
         dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -1115,7 +1115,7 @@ tmp<volScalarField::Internal> kinematicSingleLayer::Srho
             primaryMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         primaryMesh(),
         dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -1134,7 +1134,7 @@ tmp<volScalarField::Internal> kinematicSingleLayer::Sh() const
             primaryMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         primaryMesh(),
         dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/regionModels/surfaceFilmModels/noFilm/noFilm.C b/src/regionModels/surfaceFilmModels/noFilm/noFilm.C
index 9f539dc6ae..7cad81cd1e 100644
--- a/src/regionModels/surfaceFilmModels/noFilm/noFilm.C
+++ b/src/regionModels/surfaceFilmModels/noFilm/noFilm.C
@@ -83,7 +83,7 @@ tmp<volScalarField::Internal> noFilm::Srho() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -102,7 +102,7 @@ tmp<volScalarField::Internal> noFilm::Srho(const label i) const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -121,7 +121,7 @@ tmp<volScalarField::Internal> noFilm::Sh() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForces/contactAngleForce/contactAngleForce.C b/src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForces/contactAngleForce/contactAngleForce.C
index 3e81f8d3bb..e88d983f08 100644
--- a/src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForces/contactAngleForce/contactAngleForce.C
+++ b/src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForces/contactAngleForce/contactAngleForce.C
@@ -80,7 +80,7 @@ void contactAngleForce::initialise()
                 filmModel_.regionMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             filmModel_.regionMesh(),
             dimensionedScalar("y", dimLength, GREAT)
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/heatTransferModel/constantHeatTransfer/constantHeatTransfer.C b/src/regionModels/surfaceFilmModels/submodels/thermo/heatTransferModel/constantHeatTransfer/constantHeatTransfer.C
index 6f80ef6fef..d36ad75b81 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/heatTransferModel/constantHeatTransfer/constantHeatTransfer.C
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/heatTransferModel/constantHeatTransfer/constantHeatTransfer.C
@@ -87,7 +87,7 @@ tmp<volScalarField> constantHeatTransfer::h() const
                 filmModel_.regionMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             filmModel_.regionMesh(),
             dimensionedScalar
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/phaseChangeModel/waxSolventEvaporation/waxSolventEvaporation.C b/src/regionModels/surfaceFilmModels/submodels/thermo/phaseChangeModel/waxSolventEvaporation/waxSolventEvaporation.C
index 737382070c..6a6e342a12 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/phaseChangeModel/waxSolventEvaporation/waxSolventEvaporation.C
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/phaseChangeModel/waxSolventEvaporation/waxSolventEvaporation.C
@@ -196,7 +196,7 @@ void waxSolventEvaporation::correctModel
             film.regionMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         film.regionMesh(),
         dimensionedScalar(dimDensity*dimVelocity, Zero)
@@ -211,7 +211,7 @@ void waxSolventEvaporation::correctModel
             film.regionMesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         film.regionMesh(),
         dimensionedScalar(dimDensity*dimVelocity, Zero)
diff --git a/src/regionModels/surfaceFilmModels/surfaceFilmModel/surfaceFilmModelNew.C b/src/regionModels/surfaceFilmModels/surfaceFilmModel/surfaceFilmModelNew.C
index 9227b5d3b5..9ae308f554 100644
--- a/src/regionModels/surfaceFilmModels/surfaceFilmModel/surfaceFilmModelNew.C
+++ b/src/regionModels/surfaceFilmModels/surfaceFilmModel/surfaceFilmModelNew.C
@@ -56,7 +56,7 @@ autoPtr<surfaceFilmModel> surfaceFilmModel::New
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false // Do not register
+        IOobject::NO_REGISTER
     );
 
     if (io.typeHeaderOk<IOdictionary>())
diff --git a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
index 79d805c38b..b792aa807e 100644
--- a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
+++ b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
@@ -550,8 +550,8 @@ thermoSingleLayer::thermoSingleLayer
                 time().timeName(),
                 regionMesh(),
                 IOobject::READ_IF_PRESENT,
-                IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_WRITE,
+                IOobject::NO_REGISTER
             ),
             fvc::flux(deltaRho_*U_)
         );
@@ -716,7 +716,7 @@ tmp<volScalarField::Internal> thermoSingleLayer::Srho() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             primaryMesh(),
             dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -768,7 +768,7 @@ tmp<volScalarField::Internal> thermoSingleLayer::Srho
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             primaryMesh(),
             dimensionedScalar(dimMass/dimVolume/dimTime, Zero)
@@ -818,7 +818,7 @@ tmp<volScalarField::Internal> thermoSingleLayer::Sh() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             primaryMesh(),
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/regionModels/thermalBaffleModels/noThermo/noThermo.C b/src/regionModels/thermalBaffleModels/noThermo/noThermo.C
index af7668052b..755c3a4e4e 100644
--- a/src/regionModels/thermalBaffleModels/noThermo/noThermo.C
+++ b/src/regionModels/thermalBaffleModels/noThermo/noThermo.C
@@ -104,7 +104,7 @@ const tmp<volScalarField> noThermo::Cp() const
                 primaryMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             primaryMesh(),
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/regionModels/thermalBaffleModels/thermalBaffle/thermalBaffle.C b/src/regionModels/thermalBaffleModels/thermalBaffle/thermalBaffle.C
index 131aed9b48..777b3fced8 100644
--- a/src/regionModels/thermalBaffleModels/thermalBaffle/thermalBaffle.C
+++ b/src/regionModels/thermalBaffleModels/thermalBaffle/thermalBaffle.C
@@ -83,7 +83,7 @@ void thermalBaffle::solveEnergy()
                 regionMesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             regionMesh(),
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/regionModels/thermalBaffleModels/thermalBaffleModel/thermalBaffleModelNew.C b/src/regionModels/thermalBaffleModels/thermalBaffleModel/thermalBaffleModelNew.C
index e0df412934..3733b92004 100644
--- a/src/regionModels/thermalBaffleModels/thermalBaffleModel/thermalBaffleModelNew.C
+++ b/src/regionModels/thermalBaffleModels/thermalBaffleModel/thermalBaffleModelNew.C
@@ -48,9 +48,9 @@ autoPtr<thermalBaffleModel> thermalBaffleModel::New(const fvMesh& mesh)
             "thermalBaffleProperties",
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/renumber/renumberMethods/manualRenumber/manualRenumber.C b/src/renumber/renumberMethods/manualRenumber/manualRenumber.C
index c537d7fa53..bce6268cef 100644
--- a/src/renumber/renumberMethods/manualRenumber/manualRenumber.C
+++ b/src/renumber/renumberMethods/manualRenumber/manualRenumber.C
@@ -66,16 +66,17 @@ Foam::labelList Foam::manualRenumber::renumber
     const pointField& points
 ) const
 {
-    labelIOList newToOld
+    labelList newToOld
     (
-        IOobject
+        labelIOList::readContents
         (
-            dataFile_,
-            mesh.facesInstance(),
-            mesh,
-            IOobject::MUST_READ,
-            IOobject::AUTO_WRITE,
-            false
+            IOobject
+            (
+                dataFile_,
+                mesh.facesInstance(),
+                mesh.thisDb(),
+                IOobject::MUST_READ
+            )
         )
     );
 
@@ -104,7 +105,7 @@ Foam::labelList Foam::manualRenumber::renumber
                 << "Renumbering is not one-to-one. Index "
                 << i << " maps onto original cell " << origCelli
                 << ".\n" << "Manual renumbering data read from file "
-                << dataFile_ << "." << endl
+                << dataFile_ << nl
                 << exit(FatalError);
         }
 
@@ -115,16 +116,15 @@ Foam::labelList Foam::manualRenumber::renumber
         else
         {
             FatalErrorInFunction
-                << "Renumbering is not one-to-one. Both index "
-                << oldToNew[origCelli]
-                << " and " << i << " map onto " << origCelli
-                << ".\n" << "Manual renumbering data read from file "
-                << dataFile_ << "." << endl
+                << "Renumbering is not one-to-one. Index " << i << " and "
+                << oldToNew[origCelli] << " map onto " << origCelli << nl
+                << "Manual renumbering data read from file "
+                << dataFile_ << nl
                 << exit(FatalError);
         }
     }
 
-    return std::move(newToOld);
+    return newToOld;
 }
 
 
diff --git a/src/rigidBodyMeshMotion/rigidBodyMeshMotion/rigidBodyMeshMotion.C b/src/rigidBodyMeshMotion/rigidBodyMeshMotion/rigidBodyMeshMotion.C
index 79d9c5d1fa..cc52b3237e 100644
--- a/src/rigidBodyMeshMotion/rigidBodyMeshMotion/rigidBodyMeshMotion.C
+++ b/src/rigidBodyMeshMotion/rigidBodyMeshMotion/rigidBodyMeshMotion.C
@@ -75,7 +75,7 @@ Foam::rigidBodyMeshMotion::bodyMesh::bodyMesh
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pointMesh::New(mesh),
         dimensionedScalar(dimless, Zero)
@@ -111,7 +111,7 @@ Foam::rigidBodyMeshMotion::rigidBodyMeshMotion
                 mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
       : coeffDict()
@@ -408,7 +408,7 @@ bool Foam::rigidBodyMeshMotion::writeObject
             mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/rigidBodyMeshMotion/rigidBodyMeshMotionSolver/rigidBodyMeshMotionSolver.C b/src/rigidBodyMeshMotion/rigidBodyMeshMotionSolver/rigidBodyMeshMotionSolver.C
index c11c53b9d6..3544dd2723 100644
--- a/src/rigidBodyMeshMotion/rigidBodyMeshMotionSolver/rigidBodyMeshMotionSolver.C
+++ b/src/rigidBodyMeshMotion/rigidBodyMeshMotionSolver/rigidBodyMeshMotionSolver.C
@@ -95,7 +95,7 @@ Foam::rigidBodyMeshMotionSolver::rigidBodyMeshMotionSolver
                 mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
       : coeffDict()
@@ -295,7 +295,7 @@ bool Foam::rigidBodyMeshMotionSolver::writeObject
             mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/sampling/probes/probesTemplates.C b/src/sampling/probes/probesTemplates.C
index 72c44fc914..0d40107fb5 100644
--- a/src/sampling/probes/probesTemplates.C
+++ b/src/sampling/probes/probesTemplates.C
@@ -83,7 +83,7 @@ Foam::probes::getOrLoadField(const word& fieldName) const
                     mesh_,
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 mesh_
             )
diff --git a/src/sampling/sampledSet/sampledSets/sampledSetsImpl.C b/src/sampling/sampledSet/sampledSets/sampledSetsImpl.C
index f444300ad3..a4f8a4a004 100644
--- a/src/sampling/sampledSet/sampledSets/sampledSetsImpl.C
+++ b/src/sampling/sampledSet/sampledSets/sampledSetsImpl.C
@@ -53,7 +53,7 @@ Foam::sampledSets::getOrLoadField(const word& fieldName) const
                     mesh_,
                     IOobject::MUST_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 mesh_
             )
diff --git a/src/sampling/sampledSet/triSurfaceMeshPointSet/triSurfaceMeshPointSet.C b/src/sampling/sampledSet/triSurfaceMeshPointSet/triSurfaceMeshPointSet.C
index 9e7975f40d..ea5c5343e6 100644
--- a/src/sampling/sampledSet/triSurfaceMeshPointSet/triSurfaceMeshPointSet.C
+++ b/src/sampling/sampledSet/triSurfaceMeshPointSet/triSurfaceMeshPointSet.C
@@ -147,7 +147,7 @@ Foam::triSurfaceMeshPointSet::triSurfaceMeshPointSet
                 mesh.time(),
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             dictionary::null
         ).points();
diff --git a/src/sampling/sampledSurface/isoSurface/sampledIsoSurface.C b/src/sampling/sampledSurface/isoSurface/sampledIsoSurface.C
index 8b92f7a6e2..787201a8cc 100644
--- a/src/sampling/sampledSurface/isoSurface/sampledIsoSurface.C
+++ b/src/sampling/sampledSurface/isoSurface/sampledIsoSurface.C
@@ -91,7 +91,7 @@ void Foam::sampledIsoSurface::getIsoFields() const
                 fvm,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             );
 
             if (vfHeader.typeHeaderOk<volScalarField>(true))
diff --git a/src/sampling/sampledSurface/sampledCuttingPlane/sampledCuttingPlane.C b/src/sampling/sampledSurface/sampledCuttingPlane/sampledCuttingPlane.C
index 2623b11235..79f74e001f 100644
--- a/src/sampling/sampledSurface/sampledCuttingPlane/sampledCuttingPlane.C
+++ b/src/sampling/sampledSurface/sampledCuttingPlane/sampledCuttingPlane.C
@@ -471,7 +471,7 @@ void Foam::sampledCuttingPlane::createGeometry()
                 mesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimensionedScalar(dimLength, Zero)
@@ -494,7 +494,7 @@ void Foam::sampledCuttingPlane::createGeometry()
                 mesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pointMesh::New(mesh),
             dimensionedScalar(dimLength, Zero)
diff --git a/src/sampling/sampledSurface/sampledMeshedSurface/sampledMeshedSurface.C b/src/sampling/sampledSurface/sampledMeshedSurface/sampledMeshedSurface.C
index cf0977332b..2cce5342e2 100644
--- a/src/sampling/sampledSurface/sampledMeshedSurface/sampledMeshedSurface.C
+++ b/src/sampling/sampledSurface/sampledMeshedSurface/sampledMeshedSurface.C
@@ -88,7 +88,7 @@ inline static IOobject selectReadIO(const word& name, const Time& runTime)
         runTime,                // registry
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false   // no register
+        IOobject::NO_REGISTER
     );
 }
 
diff --git a/src/sampling/sampledSurface/sampledSurface/sampledSurfaceTemplates.C b/src/sampling/sampledSurface/sampledSurface/sampledSurfaceTemplates.C
index a9225a204a..0495196b1d 100644
--- a/src/sampling/sampledSurface/sampledSurface/sampledSurfaceTemplates.C
+++ b/src/sampling/sampledSurface/sampledSurface/sampledSurfaceTemplates.C
@@ -142,7 +142,7 @@ Foam::sampledSurface::pointAverage
             pfld.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh,
         dimensioned<Type>(dimless, Zero)
diff --git a/src/sampling/sampledSurface/thresholdCellFaces/sampledThresholdCellFaces.C b/src/sampling/sampledSurface/thresholdCellFaces/sampledThresholdCellFaces.C
index b1d6fe1e7f..90486ebaba 100644
--- a/src/sampling/sampledSurface/thresholdCellFaces/sampledThresholdCellFaces.C
+++ b/src/sampling/sampledSurface/thresholdCellFaces/sampledThresholdCellFaces.C
@@ -98,7 +98,7 @@ bool Foam::sampledThresholdCellFaces::updateGeometry() const
                 fvm,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvm
         );
diff --git a/src/sampling/surface/cutting/cuttingPlaneCuts.C b/src/sampling/surface/cutting/cuttingPlaneCuts.C
index b5e5997167..5f5d119e68 100644
--- a/src/sampling/surface/cutting/cuttingPlaneCuts.C
+++ b/src/sampling/surface/cutting/cuttingPlaneCuts.C
@@ -173,7 +173,7 @@ Foam::label Foam::cuttingPlane::calcCellCuts
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvmesh,
             dimensionedScalar(dimless, Zero)
diff --git a/src/sampling/surface/cutting/cuttingSurfaceCuts.C b/src/sampling/surface/cutting/cuttingSurfaceCuts.C
index 697ee9a77b..3c8744f686 100644
--- a/src/sampling/surface/cutting/cuttingSurfaceCuts.C
+++ b/src/sampling/surface/cutting/cuttingSurfaceCuts.C
@@ -108,7 +108,7 @@ void Foam::cuttingSurface::calcCellCuts
                 fvm.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvm,
             dimensionedScalar(dimless, Zero)
@@ -131,7 +131,7 @@ void Foam::cuttingSurface::calcCellCuts
                 fvm.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pointMesh::New(fvm),
             dimensionedScalar(dimLength, Zero)
diff --git a/src/sampling/surface/distanceSurface/distanceSurface.C b/src/sampling/surface/distanceSurface/distanceSurface.C
index 31cca66329..c8f1fa18c5 100644
--- a/src/sampling/surface/distanceSurface/distanceSurface.C
+++ b/src/sampling/surface/distanceSurface/distanceSurface.C
@@ -433,7 +433,7 @@ void Foam::distanceSurface::createGeometry()
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvmesh,
             dimensionedScalar(dimLength, GREAT)
@@ -676,7 +676,7 @@ void Foam::distanceSurface::createGeometry()
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             pointMesh::New(fvmesh),
             dimensionedScalar(dimLength, Zero)
diff --git a/src/sampling/surface/isoSurface/isoSurfaceCell.C b/src/sampling/surface/isoSurface/isoSurfaceCell.C
index b0700f97d0..06a7725304 100644
--- a/src/sampling/surface/isoSurface/isoSurfaceCell.C
+++ b/src/sampling/surface/isoSurface/isoSurfaceCell.C
@@ -1199,7 +1199,7 @@ Foam::isoSurfaceCell::isoSurfaceCell
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvmesh,
             dimensionedScalar(dimless, Zero)
diff --git a/src/sampling/surface/isoSurface/isoSurfacePoint.C b/src/sampling/surface/isoSurface/isoSurfacePoint.C
index 0eaa1c1e71..8592162eae 100644
--- a/src/sampling/surface/isoSurface/isoSurfacePoint.C
+++ b/src/sampling/surface/isoSurface/isoSurfacePoint.C
@@ -1366,7 +1366,7 @@ Foam::isoSurfacePoint::isoSurfacePoint
             fvmesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         fvmesh,
         dimLength,
@@ -1448,7 +1448,7 @@ Foam::isoSurfacePoint::isoSurfacePoint
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvmesh,
             dimensionedScalar(dimless, Zero)
diff --git a/src/sampling/surface/isoSurface/isoSurfacePointTemplates.C b/src/sampling/surface/isoSurface/isoSurfacePointTemplates.C
index a4bf332ae3..fe314fc6df 100644
--- a/src/sampling/surface/isoSurface/isoSurfacePointTemplates.C
+++ b/src/sampling/surface/isoSurface/isoSurfacePointTemplates.C
@@ -51,7 +51,7 @@ Foam::isoSurfacePoint::adaptPatchFields
             fld.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         fld,        // internal field
         true        // preserveCouples
diff --git a/src/sampling/surface/isoSurface/isoSurfaceTopo.C b/src/sampling/surface/isoSurface/isoSurfaceTopo.C
index 68a1c831f1..1c8d10c1f6 100644
--- a/src/sampling/surface/isoSurface/isoSurfaceTopo.C
+++ b/src/sampling/surface/isoSurface/isoSurfaceTopo.C
@@ -978,7 +978,7 @@ Foam::isoSurfaceTopo::isoSurfaceTopo
                 fvmesh.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             fvmesh,
             dimensionedScalar(dimless)
diff --git a/src/sixDoFRigidBodyMotion/sixDoFRigidBodyMotionSolver/sixDoFRigidBodyMotionSolver.C b/src/sixDoFRigidBodyMotion/sixDoFRigidBodyMotionSolver/sixDoFRigidBodyMotionSolver.C
index d3559f4ea9..c1f87b91fc 100644
--- a/src/sixDoFRigidBodyMotion/sixDoFRigidBodyMotionSolver/sixDoFRigidBodyMotionSolver.C
+++ b/src/sixDoFRigidBodyMotion/sixDoFRigidBodyMotionSolver/sixDoFRigidBodyMotionSolver.C
@@ -79,7 +79,7 @@ Foam::sixDoFRigidBodyMotionSolver::sixDoFRigidBodyMotionSolver
                 mesh,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
       : coeffDict(),
@@ -101,7 +101,7 @@ Foam::sixDoFRigidBodyMotionSolver::sixDoFRigidBodyMotionSolver
             mesh,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         pointMesh::New(mesh),
         dimensionedScalar(dimless, Zero)
@@ -311,7 +311,7 @@ bool Foam::sixDoFRigidBodyMotionSolver::writeObject
             mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/surfMesh/MeshedSurface/MeshedSurface.C b/src/surfMesh/MeshedSurface/MeshedSurface.C
index 5a692aa7f0..698ece2438 100644
--- a/src/surfMesh/MeshedSurface/MeshedSurface.C
+++ b/src/surfMesh/MeshedSurface/MeshedSurface.C
@@ -499,7 +499,7 @@ Foam::MeshedSurface<Face>::MeshedSurface
             runTime,
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         surfName
     );
diff --git a/src/surfMesh/MeshedSurfaceProxy/MeshedSurfaceProxy.C b/src/surfMesh/MeshedSurfaceProxy/MeshedSurfaceProxy.C
index ae9ee831d9..b1d38377a1 100644
--- a/src/surfMesh/MeshedSurfaceProxy/MeshedSurfaceProxy.C
+++ b/src/surfMesh/MeshedSurfaceProxy/MeshedSurfaceProxy.C
@@ -155,7 +155,7 @@ void Foam::MeshedSurfaceProxy<Face>::write
                 t,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -181,7 +181,7 @@ void Foam::MeshedSurfaceProxy<Face>::write
                 t,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -214,7 +214,7 @@ void Foam::MeshedSurfaceProxy<Face>::write
                 t,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/src/surfMesh/surfMesh/surfMeshIO.C b/src/surfMesh/surfMesh/surfMeshIO.C
index d1edce3521..c0116a212b 100644
--- a/src/surfMesh/surfMesh/surfMeshIO.C
+++ b/src/surfMesh/surfMesh/surfMeshIO.C
@@ -92,7 +92,7 @@ Foam::surfMesh::readUpdateState Foam::surfMesh::readUpdate()
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -106,7 +106,7 @@ Foam::surfMesh::readUpdateState Foam::surfMesh::readUpdate()
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -121,7 +121,7 @@ Foam::surfMesh::readUpdateState Foam::surfMesh::readUpdate()
                 *this,
                 IOobject::READ_IF_PRESENT,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
@@ -176,7 +176,7 @@ Foam::surfMesh::readUpdateState Foam::surfMesh::readUpdate()
                 *this,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/src/surfMesh/surfaceFormats/vtk/VTKsurfaceFormat.C b/src/surfMesh/surfaceFormats/vtk/VTKsurfaceFormat.C
index c1dcdf2fb5..114f24e52a 100644
--- a/src/surfMesh/surfaceFormats/vtk/VTKsurfaceFormat.C
+++ b/src/surfMesh/surfaceFormats/vtk/VTKsurfaceFormat.C
@@ -116,7 +116,7 @@ bool Foam::fileFormats::VTKsurfaceFormat<Face>::read
             *dummyTimePtr,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/surfMesh/writers/debug/debugSurfaceWriter.C b/src/surfMesh/writers/debug/debugSurfaceWriter.C
index 7d1ee11c48..b0ab5cb7b5 100644
--- a/src/surfMesh/writers/debug/debugSurfaceWriter.C
+++ b/src/surfMesh/writers/debug/debugSurfaceWriter.C
@@ -283,7 +283,7 @@ Foam::fileName Foam::surfaceWriters::debugWriter::write()
                 *dummyTimePtr,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false  // Do not register
+                IOobject::NO_REGISTER
             )
         );
         iopts.note() = (this->isPointData() ? "point data" : "face data");
@@ -351,7 +351,7 @@ Foam::fileName Foam::surfaceWriters::debugWriter::writeTemplate
                     *dummyTimePtr,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false  // Do not register
+                    IOobject::NO_REGISTER
                 )
             );
             iopts.note() = (this->isPointData() ? "point data" : "face data");
@@ -369,7 +369,7 @@ Foam::fileName Foam::surfaceWriters::debugWriter::writeTemplate
                     *dummyTimePtr,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false  // Do not register
+                    IOobject::NO_REGISTER
                 )
             );
             iofld.note() = (this->isPointData() ? "point data" : "face data");
diff --git a/src/thermophysicalModels/basic/basicThermo/basicThermoTemplates.C b/src/thermophysicalModels/basic/basicThermo/basicThermoTemplates.C
index ca69a45607..68e540cf44 100644
--- a/src/thermophysicalModels/basic/basicThermo/basicThermoTemplates.C
+++ b/src/thermophysicalModels/basic/basicThermo/basicThermoTemplates.C
@@ -141,9 +141,9 @@ Foam::autoPtr<Thermo> Foam::basicThermo::New
             phasePropertyName(dictName, phaseName),
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -190,9 +190,9 @@ Foam::autoPtr<Thermo> Foam::basicThermo::New
             dictName,
             mesh.time().constant(),
             mesh,
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/thermophysicalModels/basic/heThermo/heThermo.C b/src/thermophysicalModels/basic/heThermo/heThermo.C
index b880caa00c..3690a1f30d 100644
--- a/src/thermophysicalModels/basic/heThermo/heThermo.C
+++ b/src/thermophysicalModels/basic/heThermo/heThermo.C
@@ -229,7 +229,7 @@ Foam::tmp<Foam::volScalarField> Foam::heThermo<BasicThermo, MixtureType>::he
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             he_.dimensions()
@@ -324,7 +324,7 @@ Foam::heThermo<BasicThermo, MixtureType>::hc() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             he_.dimensions()
@@ -415,7 +415,7 @@ Foam::heThermo<BasicThermo, MixtureType>::Cp() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimEnergy/dimMass/dimTemperature
@@ -510,7 +510,7 @@ Foam::heThermo<BasicThermo, MixtureType>::Cv() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimEnergy/dimMass/dimTemperature
@@ -579,7 +579,7 @@ Foam::heThermo<BasicThermo, MixtureType>::gamma() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimless
@@ -654,7 +654,7 @@ Foam::heThermo<BasicThermo, MixtureType>::Cpv() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimEnergy/dimMass/dimTemperature
@@ -726,7 +726,7 @@ Foam::heThermo<BasicThermo, MixtureType>::CpByCpv() const
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimless
@@ -832,7 +832,7 @@ Foam::tmp<Foam::volScalarField> Foam::heThermo<BasicThermo, MixtureType>::W
                 mesh,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh,
             dimMass/dimMoles
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/StandardChemistryModel/StandardChemistryModel.C b/src/thermophysicalModels/chemistryModel/chemistryModel/StandardChemistryModel/StandardChemistryModel.C
index cad5e2b9fe..e7f3cd40c3 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/StandardChemistryModel/StandardChemistryModel.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/StandardChemistryModel/StandardChemistryModel.C
@@ -481,7 +481,7 @@ Foam::StandardChemistryModel<ReactionThermo, ThermoType>::tc() const
                 this->mesh(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh(),
             dimensionedScalar("small", dimTime, SMALL),
@@ -555,7 +555,7 @@ Foam::StandardChemistryModel<ReactionThermo, ThermoType>::Qdot() const
                 this->mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh_,
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
index 6d355fbe23..bcc0abb832 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/TDACChemistryModel/TDACChemistryModel.C
@@ -651,7 +651,7 @@ Foam::scalar Foam::TDACChemistryModel<ReactionThermo, ThermoType>::solve
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->thermo().rho()
     );
diff --git a/src/thermophysicalModels/chemistryModel/chemistryModel/basicChemistryModel/basicChemistryModelTemplates.C b/src/thermophysicalModels/chemistryModel/chemistryModel/basicChemistryModel/basicChemistryModelTemplates.C
index 954d41d1d0..32d5f00358 100644
--- a/src/thermophysicalModels/chemistryModel/chemistryModel/basicChemistryModel/basicChemistryModelTemplates.C
+++ b/src/thermophysicalModels/chemistryModel/chemistryModel/basicChemistryModel/basicChemistryModelTemplates.C
@@ -46,7 +46,7 @@ Foam::autoPtr<ChemistryModel> Foam::basicChemistryModel::New
             thermo.db(),
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/thermophysicalModels/laminarFlameSpeed/Gulders/Gulders.C b/src/thermophysicalModels/laminarFlameSpeed/Gulders/Gulders.C
index 5ea04324a8..d17d028d9f 100644
--- a/src/thermophysicalModels/laminarFlameSpeed/Gulders/Gulders.C
+++ b/src/thermophysicalModels/laminarFlameSpeed/Gulders/Gulders.C
@@ -123,7 +123,7 @@ Foam::tmp<Foam::volScalarField> Foam::laminarFlameSpeedModels::Gulders::Su0pTphi
                 p.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p.mesh(),
             dimensionedScalar(dimVelocity, Zero)
@@ -176,7 +176,7 @@ Foam::tmp<Foam::volScalarField> Foam::laminarFlameSpeedModels::Gulders::Su0pTphi
                 p.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p.mesh(),
             dimensionedScalar(dimVelocity, Zero)
diff --git a/src/thermophysicalModels/laminarFlameSpeed/GuldersEGR/GuldersEGR.C b/src/thermophysicalModels/laminarFlameSpeed/GuldersEGR/GuldersEGR.C
index 6a16125f8f..f3478e80b3 100644
--- a/src/thermophysicalModels/laminarFlameSpeed/GuldersEGR/GuldersEGR.C
+++ b/src/thermophysicalModels/laminarFlameSpeed/GuldersEGR/GuldersEGR.C
@@ -123,7 +123,7 @@ Foam::laminarFlameSpeedModels::GuldersEGR::Su0pTphi
                 p.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p.mesh(),
             dimensionedScalar(dimVelocity, Zero)
@@ -178,7 +178,7 @@ Foam::laminarFlameSpeedModels::GuldersEGR::Su0pTphi
                 p.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p.mesh(),
             dimensionedScalar(dimVelocity, Zero)
diff --git a/src/thermophysicalModels/laminarFlameSpeed/RaviPetersen/RaviPetersen.C b/src/thermophysicalModels/laminarFlameSpeed/RaviPetersen/RaviPetersen.C
index 1e4f934e75..ac4df02529 100644
--- a/src/thermophysicalModels/laminarFlameSpeed/RaviPetersen/RaviPetersen.C
+++ b/src/thermophysicalModels/laminarFlameSpeed/RaviPetersen/RaviPetersen.C
@@ -302,7 +302,7 @@ Foam::laminarFlameSpeedModels::RaviPetersen::operator()() const
             p.db(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         p.mesh(),
         dimensionedScalar(dimless, Zero)
@@ -334,7 +334,7 @@ Foam::laminarFlameSpeedModels::RaviPetersen::operator()() const
                 p.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             p.mesh(),
             dimensionedScalar(dimVelocity, Zero)
diff --git a/src/thermophysicalModels/laminarFlameSpeed/constant/constant.C b/src/thermophysicalModels/laminarFlameSpeed/constant/constant.C
index 7d11e8c5ba..2f09891022 100644
--- a/src/thermophysicalModels/laminarFlameSpeed/constant/constant.C
+++ b/src/thermophysicalModels/laminarFlameSpeed/constant/constant.C
@@ -82,7 +82,7 @@ Foam::laminarFlameSpeedModels::constant::operator()() const
                 psiuReactionThermo_.T().db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             psiuReactionThermo_.T().mesh(),
             Su_
diff --git a/src/thermophysicalModels/laminarFlameSpeed/laminarFlameSpeed/laminarFlameSpeedNew.C b/src/thermophysicalModels/laminarFlameSpeed/laminarFlameSpeed/laminarFlameSpeedNew.C
index eb1b021db7..772457b3ff 100644
--- a/src/thermophysicalModels/laminarFlameSpeed/laminarFlameSpeed/laminarFlameSpeedNew.C
+++ b/src/thermophysicalModels/laminarFlameSpeed/laminarFlameSpeed/laminarFlameSpeedNew.C
@@ -44,7 +44,7 @@ Foam::autoPtr<Foam::laminarFlameSpeed> Foam::laminarFlameSpeed::New
             ct.T().db(),
             IOobject::MUST_READ_IF_MODIFIED,
             IOobject::NO_WRITE,
-            false // Do not register
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/thermophysicalModels/radiation/include/createIncompressibleRadiationModel.H b/src/thermophysicalModels/radiation/include/createIncompressibleRadiationModel.H
index 8179b67553..ebb6991aba 100644
--- a/src/thermophysicalModels/radiation/include/createIncompressibleRadiationModel.H
+++ b/src/thermophysicalModels/radiation/include/createIncompressibleRadiationModel.H
@@ -21,7 +21,7 @@
                 runTime,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false // Do not register
+                IOobject::NO_REGISTER
             )
         );
 
diff --git a/src/thermophysicalModels/radiation/radiationModels/P1/P1.C b/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
index d4336dd3c7..4df1c317a5 100644
--- a/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
+++ b/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
@@ -265,7 +265,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::P1::Rp() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             4.0*absorptionEmission_->eCont()*physicoChemical::sigma
         )
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
index 1f452986b6..e7aabf242a 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
@@ -656,7 +656,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::fvDOM::Rp() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             (
                 4
@@ -699,7 +699,7 @@ Foam::radiation::fvDOM::Ru() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimensionSet(1, -1, -3, 0, 0), Zero)
diff --git a/src/thermophysicalModels/radiation/radiationModels/radiationModel/radiationModelNew.C b/src/thermophysicalModels/radiation/radiationModels/radiationModel/radiationModelNew.C
index 01d416d035..cc17586264 100644
--- a/src/thermophysicalModels/radiation/radiationModels/radiationModel/radiationModelNew.C
+++ b/src/thermophysicalModels/radiation/radiationModels/radiationModel/radiationModelNew.C
@@ -46,9 +46,9 @@ Foam::radiation::radiationModel::New
         "radiationProperties",
         T.time().constant(),
         T.mesh(),
-        IOobject::MUST_READ_IF_MODIFIED,
+        IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false // Do not register
+        IOobject::NO_REGISTER
     );
 
     if (io.typeHeaderOk<IOdictionary>(true))
diff --git a/src/thermophysicalModels/radiation/radiationModels/solarLoad/faceShading/faceShading.C b/src/thermophysicalModels/radiation/radiationModels/solarLoad/faceShading/faceShading.C
index fb670bc53e..d415b9c030 100644
--- a/src/thermophysicalModels/radiation/radiationModels/solarLoad/faceShading/faceShading.C
+++ b/src/thermophysicalModels/radiation/radiationModels/solarLoad/faceShading/faceShading.C
@@ -223,7 +223,7 @@ void Foam::faceShading::calculate()
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless, Zero)
diff --git a/src/thermophysicalModels/radiation/radiationModels/solarLoad/solarLoad.C b/src/thermophysicalModels/radiation/radiationModels/solarLoad/solarLoad.C
index 1b897d7a61..ef13824206 100644
--- a/src/thermophysicalModels/radiation/radiationModels/solarLoad/solarLoad.C
+++ b/src/thermophysicalModels/radiation/radiationModels/solarLoad/solarLoad.C
@@ -427,7 +427,7 @@ void Foam::radiation::solarLoad::calculateQdiff
             mesh_,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -920,7 +920,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::solarLoad::Rp() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar
diff --git a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
index 7e9bc5a010..86f3432a72 100644
--- a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
+++ b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
@@ -79,7 +79,7 @@ void Foam::radiation::viewFactor::initialise()
                 mesh_.time(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             finalAgglom_
@@ -123,7 +123,7 @@ void Foam::radiation::viewFactor::initialise()
                 mesh_,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
     );
@@ -139,7 +139,7 @@ void Foam::radiation::viewFactor::initialise()
                 mesh_,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
     );
@@ -155,7 +155,7 @@ void Foam::radiation::viewFactor::initialise()
                 mesh_,
                 IOobject::MUST_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             )
         )
     );
@@ -548,7 +548,7 @@ Foam::radiation::viewFactor::viewFactor(const volScalarField& T)
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     map_(),
@@ -561,7 +561,7 @@ Foam::radiation::viewFactor::viewFactor(const volScalarField& T)
 //             mesh_.time(),
 //             IOobject::NO_READ,
 //             IOobject::NO_WRITE,
-//             false
+//             IOobject::NO_REGISTER
 //         ),
 //         mesh_,
 //         finalAgglom_
@@ -611,7 +611,7 @@ Foam::radiation::viewFactor::viewFactor
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     ),
     map_(),
@@ -624,7 +624,7 @@ Foam::radiation::viewFactor::viewFactor
 //             mesh_.time(),
 //             IOobject::NO_READ,
 //             IOobject::NO_WRITE,
-//             false
+//             IOobject::NO_REGISTER
 //         ),
 //         mesh_,
 //         finalAgglom_
@@ -1149,7 +1149,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::viewFactor::Rp() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar
@@ -1172,7 +1172,7 @@ Foam::radiation::viewFactor::Ru() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
diff --git a/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/absorptionEmissionModel/absorptionEmissionModel.C b/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/absorptionEmissionModel/absorptionEmissionModel.C
index c0307676b7..f9f78d2d2d 100644
--- a/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/absorptionEmissionModel/absorptionEmissionModel.C
+++ b/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/absorptionEmissionModel/absorptionEmissionModel.C
@@ -80,7 +80,7 @@ Foam::radiation::absorptionEmissionModel::aCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
@@ -103,7 +103,7 @@ Foam::radiation::absorptionEmissionModel::aDisp(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
@@ -133,7 +133,7 @@ Foam::radiation::absorptionEmissionModel::eCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
@@ -156,7 +156,7 @@ Foam::radiation::absorptionEmissionModel::eDisp(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
@@ -186,7 +186,7 @@ Foam::radiation::absorptionEmissionModel::ECont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
@@ -209,7 +209,7 @@ Foam::radiation::absorptionEmissionModel::EDisp(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimMass/dimLength/pow3(dimTime), Zero)
diff --git a/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/constantAbsorptionEmission/constantAbsorptionEmission.C b/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/constantAbsorptionEmission/constantAbsorptionEmission.C
index 5fdc255b70..c3f0af471a 100644
--- a/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/constantAbsorptionEmission/constantAbsorptionEmission.C
+++ b/src/thermophysicalModels/radiation/submodels/absorptionEmissionModel/constantAbsorptionEmission/constantAbsorptionEmission.C
@@ -78,7 +78,7 @@ Foam::radiation::constantAbsorptionEmission::aCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             a_
@@ -103,7 +103,7 @@ Foam::radiation::constantAbsorptionEmission::eCont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             e_
@@ -128,7 +128,7 @@ Foam::radiation::constantAbsorptionEmission::ECont(const label bandI) const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             E_
diff --git a/src/thermophysicalModels/radiation/submodels/boundaryRadiationProperties/boundaryRadiationProperties.C b/src/thermophysicalModels/radiation/submodels/boundaryRadiationProperties/boundaryRadiationProperties.C
index c77ec73321..e6201ee327 100644
--- a/src/thermophysicalModels/radiation/submodels/boundaryRadiationProperties/boundaryRadiationProperties.C
+++ b/src/thermophysicalModels/radiation/submodels/boundaryRadiationProperties/boundaryRadiationProperties.C
@@ -62,7 +62,7 @@ Foam::radiation::boundaryRadiationProperties::boundaryRadiationProperties
         mesh,
         IOobject::MUST_READ,
         IOobject::NO_WRITE,
-        false
+        IOobject::NO_REGISTER
     );
 
     if (boundaryIO.typeHeaderOk<IOdictionary>(true))
diff --git a/src/thermophysicalModels/radiation/submodels/scatterModel/constantScatter/constantScatter.C b/src/thermophysicalModels/radiation/submodels/scatterModel/constantScatter/constantScatter.C
index 2aa5c07f9f..666af9dc28 100644
--- a/src/thermophysicalModels/radiation/submodels/scatterModel/constantScatter/constantScatter.C
+++ b/src/thermophysicalModels/radiation/submodels/scatterModel/constantScatter/constantScatter.C
@@ -77,7 +77,7 @@ Foam::radiation::constantScatter::sigmaEff() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             sigma_*(3.0 - C_)
diff --git a/src/thermophysicalModels/radiation/submodels/scatterModel/noScatter/noScatter.C b/src/thermophysicalModels/radiation/submodels/scatterModel/noScatter/noScatter.C
index 239cb6edcf..cc7f40c745 100644
--- a/src/thermophysicalModels/radiation/submodels/scatterModel/noScatter/noScatter.C
+++ b/src/thermophysicalModels/radiation/submodels/scatterModel/noScatter/noScatter.C
@@ -67,7 +67,7 @@ Foam::tmp<Foam::volScalarField> Foam::radiation::noScatter::sigmaEff() const
                 mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             mesh_,
             dimensionedScalar(dimless/dimLength, Zero)
diff --git a/src/thermophysicalModels/reactionThermo/psiuReactionThermo/heheuPsiThermo.C b/src/thermophysicalModels/reactionThermo/psiuReactionThermo/heheuPsiThermo.C
index 46bbdfc786..738cde1275 100644
--- a/src/thermophysicalModels/reactionThermo/psiuReactionThermo/heheuPsiThermo.C
+++ b/src/thermophysicalModels/reactionThermo/psiuReactionThermo/heheuPsiThermo.C
@@ -478,7 +478,7 @@ Foam::heheuPsiThermo<BasicPsiThermo, MixtureType>::Tb() const
                 this->T_.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->T_
         )
@@ -537,7 +537,7 @@ Foam::heheuPsiThermo<BasicPsiThermo, MixtureType>::psiu() const
                 this->psi_.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->psi_.mesh(),
             this->psi_.dimensions()
@@ -591,7 +591,7 @@ Foam::heheuPsiThermo<BasicPsiThermo, MixtureType>::psib() const
                 this->psi_.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->psi_.mesh(),
             this->psi_.dimensions()
@@ -646,7 +646,7 @@ Foam::heheuPsiThermo<BasicPsiThermo, MixtureType>::muu() const
                 this->T_.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->T_.mesh(),
             dimensionSet(1, -1, -1, 0, 0)
@@ -704,7 +704,7 @@ Foam::heheuPsiThermo<BasicPsiThermo, MixtureType>::mub() const
                 this->T_.db(),
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->T_.mesh(),
             dimensionSet(1, -1, -1, 0, 0)
diff --git a/src/thermophysicalModels/solidChemistryModel/basicSolidChemistryModel/basicSolidChemistryModelNew.C b/src/thermophysicalModels/solidChemistryModel/basicSolidChemistryModel/basicSolidChemistryModelNew.C
index 1820bebfa2..3a305820a8 100644
--- a/src/thermophysicalModels/solidChemistryModel/basicSolidChemistryModel/basicSolidChemistryModelNew.C
+++ b/src/thermophysicalModels/solidChemistryModel/basicSolidChemistryModel/basicSolidChemistryModelNew.C
@@ -42,7 +42,7 @@ Foam::basicSolidChemistryModel::New(solidReactionThermo& thermo)
             thermo.db(),
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
@@ -58,9 +58,9 @@ Foam::basicSolidChemistryModel::New(solidReactionThermo& thermo)
             basicThermo::dictName,
             thermo.db().time().constant(),
             thermo.db(),
-            IOobject::MUST_READ_IF_MODIFIED,
+            IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/src/thermophysicalModels/solidChemistryModel/pyrolysisChemistryModel/pyrolysisChemistryModel.C b/src/thermophysicalModels/solidChemistryModel/pyrolysisChemistryModel/pyrolysisChemistryModel.C
index 402f912981..cda0d2ec76 100644
--- a/src/thermophysicalModels/solidChemistryModel/pyrolysisChemistryModel/pyrolysisChemistryModel.C
+++ b/src/thermophysicalModels/solidChemistryModel/pyrolysisChemistryModel/pyrolysisChemistryModel.C
@@ -465,7 +465,7 @@ calculate()
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->solidThermo().rho()
     );
@@ -537,7 +537,7 @@ Foam::pyrolysisChemistryModel<CompType, SolidThermo, GasThermo>::solve
             this->mesh(),
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         this->solidThermo().rho()
     );
@@ -632,7 +632,7 @@ Foam::pyrolysisChemistryModel<CompType, SolidThermo, GasThermo>::gasHs
                 this->mesh_,
                 IOobject::NO_READ,
                 IOobject::NO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh_,
             dimensionedScalar(dimEnergy/dimMass, Zero)
diff --git a/src/thermophysicalModels/solidChemistryModel/solidChemistryModel/solidChemistryModel.C b/src/thermophysicalModels/solidChemistryModel/solidChemistryModel/solidChemistryModel.C
index 9a5fafefa9..6441efddce 100644
--- a/src/thermophysicalModels/solidChemistryModel/solidChemistryModel/solidChemistryModel.C
+++ b/src/thermophysicalModels/solidChemistryModel/solidChemistryModel/solidChemistryModel.C
@@ -127,7 +127,7 @@ Foam::solidChemistryModel<CompType, SolidThermo>::Qdot() const
                 this->mesh_,
                 IOobject::NO_READ,
                 IOobject::AUTO_WRITE,
-                false
+                IOobject::NO_REGISTER
             ),
             this->mesh_,
             dimensionedScalar(dimEnergy/dimVolume/dimTime, Zero)
diff --git a/src/topoChangerFvMesh/linearValveFvMesh/linearValveFvMesh.C b/src/topoChangerFvMesh/linearValveFvMesh/linearValveFvMesh.C
index 0923015d83..440288d022 100644
--- a/src/topoChangerFvMesh/linearValveFvMesh/linearValveFvMesh.C
+++ b/src/topoChangerFvMesh/linearValveFvMesh/linearValveFvMesh.C
@@ -247,16 +247,14 @@ Foam::linearValveFvMesh::linearValveFvMesh(const IOobject& io)
     topoChangerFvMesh(io),
     motionDict_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::NO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).optionalSubDict(typeName + "Coeffs")
     ),
diff --git a/src/topoChangerFvMesh/linearValveLayersFvMesh/linearValveLayersFvMesh.C b/src/topoChangerFvMesh/linearValveLayersFvMesh/linearValveLayersFvMesh.C
index 7aac1ee2da..4e56adeb3d 100644
--- a/src/topoChangerFvMesh/linearValveLayersFvMesh/linearValveLayersFvMesh.C
+++ b/src/topoChangerFvMesh/linearValveLayersFvMesh/linearValveLayersFvMesh.C
@@ -314,16 +314,14 @@ Foam::linearValveLayersFvMesh::linearValveLayersFvMesh(const IOobject& io)
     topoChangerFvMesh(io),
     motionDict_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::NO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).optionalSubDict(typeName + "Coeffs")
     )
diff --git a/src/topoChangerFvMesh/mixerFvMesh/mixerFvMesh.C b/src/topoChangerFvMesh/mixerFvMesh/mixerFvMesh.C
index 81a47f7d93..411bb59ba4 100644
--- a/src/topoChangerFvMesh/mixerFvMesh/mixerFvMesh.C
+++ b/src/topoChangerFvMesh/mixerFvMesh/mixerFvMesh.C
@@ -256,16 +256,14 @@ Foam::mixerFvMesh::mixerFvMesh
     topoChangerFvMesh(io),
     motionDict_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::NO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).optionalSubDict(typeName + "Coeffs")
     ),
diff --git a/src/topoChangerFvMesh/movingConeTopoFvMesh/movingConeTopoFvMesh.C b/src/topoChangerFvMesh/movingConeTopoFvMesh/movingConeTopoFvMesh.C
index 6bdc46baf5..14115509ab 100644
--- a/src/topoChangerFvMesh/movingConeTopoFvMesh/movingConeTopoFvMesh.C
+++ b/src/topoChangerFvMesh/movingConeTopoFvMesh/movingConeTopoFvMesh.C
@@ -253,16 +253,14 @@ Foam::movingConeTopoFvMesh::movingConeTopoFvMesh
     topoChangerFvMesh(io, doInit),
     motionDict_
     (
-        IOdictionary
+        IOdictionary::readContents
         (
             IOobject
             (
                 "dynamicMeshDict",
                 time().constant(),
                 *this,
-                IOobject::MUST_READ_IF_MODIFIED,
-                IOobject::NO_WRITE,
-                false
+                IOobject::MUST_READ
             )
         ).optionalSubDict(typeName + "Coeffs")
     )
diff --git a/src/topoChangerFvMesh/rawTopoChangerFvMesh/rawTopoChangerFvMeshTemplates.C b/src/topoChangerFvMesh/rawTopoChangerFvMesh/rawTopoChangerFvMeshTemplates.C
index 0c8c348cbf..f4d676933f 100644
--- a/src/topoChangerFvMesh/rawTopoChangerFvMesh/rawTopoChangerFvMeshTemplates.C
+++ b/src/topoChangerFvMesh/rawTopoChangerFvMesh/rawTopoChangerFvMeshTemplates.C
@@ -92,7 +92,7 @@ void Foam::rawTopoChangerFvMesh::zeroUnmappedValues
                     *this,
                     IOobject::NO_READ,
                     IOobject::NO_WRITE,
-                    false
+                    IOobject::NO_REGISTER
                 ),
                 *this,
                 dimensioned<Type>(fld.dimensions(), Zero)
diff --git a/src/transportModels/interfaceProperties/surfaceTensionModels/constant/constantSurfaceTension.C b/src/transportModels/interfaceProperties/surfaceTensionModels/constant/constantSurfaceTension.C
index df3c4aecbe..0fed669c5a 100644
--- a/src/transportModels/interfaceProperties/surfaceTensionModels/constant/constantSurfaceTension.C
+++ b/src/transportModels/interfaceProperties/surfaceTensionModels/constant/constantSurfaceTension.C
@@ -74,7 +74,7 @@ Foam::surfaceTensionModels::constant::sigma() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         sigma_
diff --git a/src/transportModels/interfaceProperties/surfaceTensionModels/temperatureDependent/temperatureDependentSurfaceTension.C b/src/transportModels/interfaceProperties/surfaceTensionModels/temperatureDependent/temperatureDependentSurfaceTension.C
index dc942889e1..ccde889325 100644
--- a/src/transportModels/interfaceProperties/surfaceTensionModels/temperatureDependent/temperatureDependentSurfaceTension.C
+++ b/src/transportModels/interfaceProperties/surfaceTensionModels/temperatureDependent/temperatureDependentSurfaceTension.C
@@ -81,7 +81,7 @@ Foam::surfaceTensionModels::temperatureDependent::sigma() const
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         ),
         mesh_,
         dimSigma
diff --git a/src/waveModels/waveModel/waveModelNew.C b/src/waveModels/waveModel/waveModelNew.C
index ad37d25c3b..12c6f73ec3 100644
--- a/src/waveModels/waveModel/waveModelNew.C
+++ b/src/waveModels/waveModel/waveModelNew.C
@@ -45,7 +45,7 @@ Foam::autoPtr<Foam::waveModel> Foam::waveModel::New
             mesh,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false                   // Not registering
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/tutorials/incompressible/pimpleFoam/laminar/contaminatedDroplet2D/makePerturbation/makePerturbation.C b/tutorials/incompressible/pimpleFoam/laminar/contaminatedDroplet2D/makePerturbation/makePerturbation.C
index af628bfa7a..e4a9b01661 100644
--- a/tutorials/incompressible/pimpleFoam/laminar/contaminatedDroplet2D/makePerturbation/makePerturbation.C
+++ b/tutorials/incompressible/pimpleFoam/laminar/contaminatedDroplet2D/makePerturbation/makePerturbation.C
@@ -132,7 +132,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );
 
diff --git a/tutorials/incompressible/pimpleFoam/laminar/sloshing2D/makeWave/makeWave.C b/tutorials/incompressible/pimpleFoam/laminar/sloshing2D/makeWave/makeWave.C
index 2cd9c39185..0910fa3e7a 100644
--- a/tutorials/incompressible/pimpleFoam/laminar/sloshing2D/makeWave/makeWave.C
+++ b/tutorials/incompressible/pimpleFoam/laminar/sloshing2D/makeWave/makeWave.C
@@ -128,7 +128,7 @@ int main(int argc, char *argv[])
             runTime,
             IOobject::MUST_READ,
             IOobject::NO_WRITE,
-            false
+            IOobject::NO_REGISTER
         )
     );