diff --git a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
index bb2e878890..1d5512450f 100644
--- a/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
+++ b/src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2020 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -958,6 +958,8 @@ Foam::autoPtr<Foam::mapPolyMesh> Foam::meshRefinement::mergeBaffles
         }
     }
 
+    mesh_.clearOut();
+
     // Change the mesh (no inflation)
     autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh_, false, true);
 
@@ -2767,6 +2769,8 @@ Foam::autoPtr<Foam::mapPolyMesh> Foam::meshRefinement::dupNonManifoldPoints
     // Insert changes into meshMod
     pointDuplicator.setRefinement(regionSide, meshMod);
 
+    mesh_.clearOut();
+
     // Change the mesh (no inflation, parallel sync)
     autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh_, false, true);
 
@@ -3399,6 +3403,8 @@ Foam::autoPtr<Foam::mapPolyMesh> Foam::meshRefinement::zonify
         }
     }
 
+    mesh_.clearOut();
+
     // Change the mesh (no inflation, parallel sync)
     autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh_, false, true);