diff --git a/src/DriverCGNS/DriverCGNS_Write.cxx b/src/DriverCGNS/DriverCGNS_Write.cxx
index 14f1c10e2..4d79e0f7c 100644
--- a/src/DriverCGNS/DriverCGNS_Write.cxx
+++ b/src/DriverCGNS/DriverCGNS_Write.cxx
@@ -628,7 +628,7 @@ Driver_Mesh::Status DriverCGNS_Write::Perform()
       return addMessage( cg_get_error(), /*fatal = */true);
 
     // write BC location
-    if ( location != CGNS_ENUMV( Vertex ))
+    if ( location != CGNS_ENUMV( Vertex ) || meshDim == 1 )
     {
       if ( cg_boco_gridlocation_write( _fn, iBase, iZone, iBC, location) != CG_OK )
         return addMessage( cg_get_error(), /*fatal = */false);
diff --git a/src/OBJECT/SMESH_DeviceActor.cxx b/src/OBJECT/SMESH_DeviceActor.cxx
index 2f6ccd06f..cfe6159a2 100644
--- a/src/OBJECT/SMESH_DeviceActor.cxx
+++ b/src/OBJECT/SMESH_DeviceActor.cxx
@@ -37,6 +37,7 @@
 #include <VTKViewer_Transform.h>
 #include <VTKViewer_TransformFilter.h>
 #include <VTKViewer_ExtractUnstructuredGrid.h>
+#include <VTKViewer_Actor.h>
 
 // VTK Includes
 #include <vtkObjectFactory.h>
@@ -94,8 +95,8 @@ SMESH_DeviceActor
   myMapper = VTKViewer_PolyDataMapper::New();
   myPlaneCollection = vtkPlaneCollection::New();
 
-  vtkMapper::GetResolveCoincidentTopologyPolygonOffsetParameters(myPolygonOffsetFactor,
-                                                                 myPolygonOffsetUnits);
+  VTKViewer_Actor::GetDefaultPolygonOffsetParameters(myPolygonOffsetFactor,
+                                                     myPolygonOffsetUnits);
 
   myMapper->UseLookupTableScalarRangeOn();
   myMapper->SetColorModeToMapScalars();
diff --git a/src/SMESH_I/SMESH_MeshEditor_i.cxx b/src/SMESH_I/SMESH_MeshEditor_i.cxx
index 0ba74d70f..9b79bead1 100644
--- a/src/SMESH_I/SMESH_MeshEditor_i.cxx
+++ b/src/SMESH_I/SMESH_MeshEditor_i.cxx
@@ -3108,17 +3108,14 @@ SMESH_MeshEditor_i::mirror(TIDSortedElemSet &                  theElements,
   ::SMESH_MeshEditor::PGroupIDs groupIds =
       getEditor().Transform (*workElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if ( theCopy && !myIsPreviewMode)
+  if ( !myIsPreviewMode )
   {
     if ( theTargetMesh )
-    {
       theTargetMesh->GetMeshDS()->Modified();
-    }
     else
-    {
       declareMeshModified( /*isReComputeSafe=*/false );
-    }
   }
+
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
 
   SMESH_CATCH( SMESH::throwCorbaException );
@@ -3375,16 +3372,12 @@ SMESH_MeshEditor_i::translate(TIDSortedElemSet        & theElements,
   ::SMESH_MeshEditor::PGroupIDs groupIds =
       getEditor().Transform (*workElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if ( theCopy && !myIsPreviewMode )
+  if ( !myIsPreviewMode )
   {
     if ( theTargetMesh )
-    {
       theTargetMesh->GetMeshDS()->Modified();
-    }
     else
-    {
       declareMeshModified( /*isReComputeSafe=*/false );
-    }
   }
 
   return theMakeGroups ? getGroups(groupIds.get()) : 0;
@@ -3632,7 +3625,7 @@ SMESH_MeshEditor_i::rotate(TIDSortedElemSet &        theElements,
   ::SMESH_MeshEditor::PGroupIDs groupIds =
       getEditor().Transform (*workElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if ( theCopy && !myIsPreviewMode)
+  if ( !myIsPreviewMode)
   {
     if ( theTargetMesh ) theTargetMesh->GetMeshDS()->Modified();
     else                 declareMeshModified( /*isReComputeSafe=*/false );
@@ -3932,7 +3925,7 @@ SMESH_MeshEditor_i::scale(SMESH::SMESH_IDSource_ptr  theObject,
   ::SMESH_MeshEditor::PGroupIDs groupIds =
       getEditor().Transform (*workElements, aTrsf, theCopy, theMakeGroups, theTargetMesh);
 
-  if ( theCopy && !myIsPreviewMode )
+  if ( !myIsPreviewMode )
   {
     if ( theTargetMesh ) theTargetMesh->GetMeshDS()->Modified();
     else                 declareMeshModified( /*isReComputeSafe=*/false );