diff --git a/src/OpenFOAM/db/regIOobject/regIOobject.C b/src/OpenFOAM/db/regIOobject/regIOobject.C
index ac8cf38ad..3a14d5968 100644
--- a/src/OpenFOAM/db/regIOobject/regIOobject.C
+++ b/src/OpenFOAM/db/regIOobject/regIOobject.C
@@ -173,6 +173,47 @@ Foam::regIOobject::regIOobject(const regIOobject& rio, bool registerCopy)
 }
 
 
+Foam::regIOobject::regIOobject
+(
+    const word& newName,
+    const regIOobject& rio,
+    bool registerCopy
+)
+:
+    IOobject(newName, rio.instance(), rio.local(), rio.db()),
+    registered_(false),
+    ownedByRegistry_(false),
+    watchIndex_(-1),
+    eventNo_(db().getEvent()),
+    isPtr_(NULL)
+{
+    if (registerCopy)
+    {
+        checkIn();
+    }
+}
+
+
+Foam::regIOobject::regIOobject
+(
+    const IOobject& io,
+    const regIOobject& rio
+)
+:
+    IOobject(io),
+    registered_(false),
+    ownedByRegistry_(false),
+    watchIndex_(-1),
+    eventNo_(db().getEvent()),
+    isPtr_(NULL)
+{
+    if (registerObject())
+    {
+        checkIn();
+    }
+}
+
+
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
 // Delete read stream, checkout from objectRegistry and destroy
diff --git a/src/OpenFOAM/db/regIOobject/regIOobject.H b/src/OpenFOAM/db/regIOobject/regIOobject.H
index ab7ad871e..56078ce15 100644
--- a/src/OpenFOAM/db/regIOobject/regIOobject.H
+++ b/src/OpenFOAM/db/regIOobject/regIOobject.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -138,10 +138,17 @@ public:
         //- Construct as copy
         regIOobject(const regIOobject&);
 
-        //- Construct as copy, and transferring registry registration to copy
+        //- Construct as copy, transferring registry registration to copy
         //  if registerCopy is true
         regIOobject(const regIOobject&, bool registerCopy);
 
+        //- Construct as copy with new name, transfering registry registration
+        //  to copy as specified
+        regIOobject(const word& newName, const regIOobject&, bool registerCopy);
+
+        //- Construct as copy with new IO parameters
+        regIOobject(const IOobject&, const regIOobject&);
+
 
     //- Destructor
     virtual ~regIOobject();
diff --git a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
index b2ba573dd..bdffc3559 100644
--- a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
+++ b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -193,6 +193,21 @@ DimensionedField<Type, GeoMesh>::DimensionedField
 {}
 
 
+template<class Type, class GeoMesh>
+DimensionedField<Type, GeoMesh>::DimensionedField
+(
+    const IOobject& io,
+    DimensionedField<Type, GeoMesh>& df,
+    bool reUse
+)
+:
+    regIOobject(io, df),
+    Field<Type>(df, reUse),
+    mesh_(df.mesh_),
+    dimensions_(df.dimensions_)
+{}
+
+
 template<class Type, class GeoMesh>
 DimensionedField<Type, GeoMesh>::DimensionedField
 (
@@ -200,7 +215,7 @@ DimensionedField<Type, GeoMesh>::DimensionedField
     const DimensionedField<Type, GeoMesh>& df
 )
 :
-    regIOobject(IOobject(newName, df.time().timeName(), df.db())),
+    regIOobject(newName, df, newName == df.name()),
     Field<Type>(df),
     mesh_(df.mesh_),
     dimensions_(df.dimensions_)
@@ -215,7 +230,7 @@ DimensionedField<Type, GeoMesh>::DimensionedField
     bool reUse
 )
 :
-    regIOobject(IOobject(newName, df.time().timeName(), df.db())),
+    regIOobject(newName, df, true),
     Field<Type>(df, reUse),
     mesh_(df.mesh_),
     dimensions_(df.dimensions_)
@@ -229,7 +244,7 @@ DimensionedField<Type, GeoMesh>::DimensionedField
     const Xfer<DimensionedField<Type, GeoMesh> >& df
 )
 :
-    regIOobject(IOobject(newName, df->time().timeName(), df->db())),
+    regIOobject(newName, df, true),
     Field<Type>(df),
     mesh_(df->mesh_),
     dimensions_(df->dimensions_)
@@ -244,7 +259,7 @@ DimensionedField<Type, GeoMesh>::DimensionedField
     const tmp<DimensionedField<Type, GeoMesh> >& tdf
 )
 :
-    regIOobject(IOobject(newName, tdf().time().timeName(), tdf().db())),
+    regIOobject(newName, tdf(), true),
     Field<Type>
     (
         const_cast<DimensionedField<Type, GeoMesh>&>(tdf()),
diff --git a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H
index aba43c194..3472cecf1 100644
--- a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H
+++ b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -104,6 +104,7 @@ public:
     //- Runtime type information
     TypeName("DimensionedField");
 
+
     // Static Member Functions
 
         //- Return a null DimensionedField
@@ -168,12 +169,12 @@ public:
         );
 
         //- Construct as copy of tmp<DimensionedField> deleting argument
-#       ifdef ConstructFromTmp
+        #ifdef ConstructFromTmp
         DimensionedField
         (
             const tmp<DimensionedField<Type, GeoMesh> >&
         );
-#       endif
+        #endif
 
         //- Construct as copy resetting IO parameters
         DimensionedField
@@ -182,6 +183,14 @@ public:
             const DimensionedField<Type, GeoMesh>&
         );
 
+        //- Construct as copy resetting IO parameters and re-use as specified.
+        DimensionedField
+        (
+            const IOobject&,
+            DimensionedField<Type, GeoMesh>&,
+            bool reUse
+        );
+
         //- Construct as copy resetting name
         DimensionedField
         (
@@ -205,13 +214,13 @@ public:
         );
 
         //- Construct as copy resetting name
-#       ifdef ConstructFromTmp
+        #ifdef ConstructFromTmp
         DimensionedField
         (
             const word& newName,
             const tmp<DimensionedField<Type, GeoMesh> >&
         );
-#       endif
+        #endif
 
         //- Clone
         tmp<DimensionedField<Type, GeoMesh> > clone() const;
diff --git a/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.C b/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.C
index 02cd512fd..32b427c04 100644
--- a/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.C
+++ b/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -31,8 +31,6 @@ License
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-// check mesh for two fields
-
 #define checkField(gf1, gf2, op)                                    \
 if ((gf1).mesh() != (gf2).mesh())                                   \
 {                                                                   \
@@ -180,10 +178,6 @@ bool Foam::GeometricField<Type, PatchField, GeoMesh>::readOldTimeIfPresent()
 
 // * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * * //
 
-// Constructor given a GeometricField and dimensionSet
-// This allocates storage for the field but not values.
-// Note : This constructor should only be used to
-//       construct TEMPORARY variables
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -210,10 +204,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// Constructor given a GeometricField and dimensionSet
-// This allocates storage for the field but not values.
-// Note : This constructor should only be used to
-//       construct TEMPORARY variables
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -241,7 +231,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// Constructor given a GeometricField and dimensioned<Type>
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -270,7 +259,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// Constructor given a GeometricField and dimensioned<Type>
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -300,7 +288,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-//  construct from components
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -408,7 +395,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// construct as copy
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -439,7 +425,7 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
     this->writeOpt() = IOobject::NO_WRITE;
 }
 
-// construct as copy of tmp<GeometricField> deleting argument
+
 #ifdef ConstructFromTmp
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
@@ -471,7 +457,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 #endif
 
 
-// construct as copy resetting IO parameters
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -503,7 +488,39 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// construct as copy resetting name
+#ifdef ConstructFromTmp
+template<class Type, template<class> class PatchField, class GeoMesh>
+Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
+(
+    const IOobject& io,
+    const tmp<GeometricField<Type, PatchField, GeoMesh> >& tgf
+)
+:
+    DimensionedField<Type, GeoMesh>
+    (
+        io,
+        const_cast<GeometricField<Type, PatchField, GeoMesh>&>(tgf()),
+        tgf.isTmp()
+    ),
+    timeIndex_(tgf().timeIndex()),
+    field0Ptr_(NULL),
+    fieldPrevIterPtr_(NULL),
+    boundaryField_(*this, tgf().boundaryField_)
+{
+    if (debug)
+    {
+        Info<< "GeometricField<Type, PatchField, GeoMesh>::GeometricField : "
+               "constructing from tmp resetting IO params"
+            << endl << this->info() << endl;
+    }
+
+    tgf.clear();
+
+    readIfPresent();
+}
+#endif
+
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -535,7 +552,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// construct as copy resetting name
 #ifdef ConstructFromTmp
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
@@ -566,7 +582,7 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 #endif
 
-// construct as copy resetting IO parameters and patch type
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -601,7 +617,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 }
 
 
-// construct as copy resetting IO parameters and boundary types
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
 (
@@ -627,7 +642,7 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
     if (debug)
     {
         Info<< "GeometricField<Type, PatchField, GeoMesh>::GeometricField : "
-               "constructing as copy resetting IO params"
+               "constructing as copy resetting IO params and patch types"
             << endl << this->info() << endl;
     }
 
@@ -678,7 +693,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::internalField()
 }
 
 
-// Return reference to GeometricBoundaryField
 template<class Type, template<class> class PatchField, class GeoMesh>
 typename
 Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricBoundaryField&
@@ -690,7 +704,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::boundaryField()
 }
 
 
-// Store old-time field
 template<class Type, template<class> class PatchField, class GeoMesh>
 void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTimes() const
 {
@@ -711,7 +724,7 @@ void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTimes() const
     timeIndex_ = this->time().timeIndex();
 }
 
-// Store old-time field
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTime() const
 {
@@ -735,7 +748,7 @@ void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTime() const
     }
 }
 
-// Return the number of old time fields stored
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::label Foam::GeometricField<Type, PatchField, GeoMesh>::nOldTimes() const
 {
@@ -749,7 +762,7 @@ Foam::label Foam::GeometricField<Type, PatchField, GeoMesh>::nOldTimes() const
     }
 }
 
-// Return old time internal field
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 const Foam::GeometricField<Type, PatchField, GeoMesh>&
 Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime() const
@@ -778,7 +791,7 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime() const
     return *field0Ptr_;
 }
 
-// Return old time internal field
+
 template<class Type, template<class> class PatchField, class GeoMesh>
 Foam::GeometricField<Type, PatchField, GeoMesh>&
 Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime()
@@ -790,7 +803,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime()
 }
 
 
-// Store previous iteration field
 template<class Type, template<class> class PatchField, class GeoMesh>
 void Foam::GeometricField<Type, PatchField, GeoMesh>::storePrevIter() const
 {
@@ -815,7 +827,6 @@ void Foam::GeometricField<Type, PatchField, GeoMesh>::storePrevIter() const
 }
 
 
-// Return previous iteration field
 template<class Type, template<class> class PatchField, class GeoMesh>
 const Foam::GeometricField<Type, PatchField, GeoMesh>&
 Foam::GeometricField<Type, PatchField, GeoMesh>::prevIter() const
@@ -835,7 +846,6 @@ Foam::GeometricField<Type, PatchField, GeoMesh>::prevIter() const
 }
 
 
-// Correct the boundary conditions
 template<class Type, template<class> class PatchField, class GeoMesh>
 void Foam::GeometricField<Type, PatchField, GeoMesh>::
 correctBoundaryConditions()
@@ -846,7 +856,6 @@ correctBoundaryConditions()
 }
 
 
-// Does the field need a reference level for solution
 template<class Type, template<class> class PatchField, class GeoMesh>
 bool Foam::GeometricField<Type, PatchField, GeoMesh>::needReference() const
 {
@@ -940,7 +949,6 @@ void Foam::GeometricField<Type, PatchField, GeoMesh>::writeMinMax
 }
 
 
-// writeData member function required by regIOobject
 template<class Type, template<class> class PatchField, class GeoMesh>
 bool Foam::GeometricField<Type, PatchField, GeoMesh>::
 writeData(Ostream& os) const
diff --git a/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.H b/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.H
index e966f6f81..91acb5630 100644
--- a/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.H
+++ b/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -369,6 +369,15 @@ public:
             const GeometricField<Type, PatchField, GeoMesh>&
         );
 
+        //- Construct as copy of tmp<GeometricField> resetting IO parameters
+        #ifdef ConstructFromTmp
+        GeometricField
+        (
+            const IOobject&,
+            const tmp<GeometricField<Type, PatchField, GeoMesh> >&
+        );
+        #endif
+
         //- Construct as copy resetting name
         GeometricField
         (