diff --git a/src/meshTools/searchableSurface/triSurfaceMesh.C b/src/meshTools/searchableSurface/triSurfaceMesh.C
index 7b6b8ad6ad..4dfa21fd25 100644
--- a/src/meshTools/searchableSurface/triSurfaceMesh.C
+++ b/src/meshTools/searchableSurface/triSurfaceMesh.C
@@ -2,8 +2,8 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
-     \\/     M anipulation  |
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -39,6 +39,8 @@ namespace Foam
 defineTypeNameAndDebug(triSurfaceMesh, 0);
 addToRunTimeSelectionTable(searchableSurface, triSurfaceMesh, dict);
 
+word triSurfaceMesh::meshSubDir = "triSurface";
+
 }
 
 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
@@ -231,7 +233,7 @@ Foam::triSurfaceMesh::triSurfaceMesh(const IOobject& io, const triSurface& s)
         (
             io.name(),
             io.instance(),
-            io.local(),
+            io.local(),  //"triSurfaceFields",
             io.db(),
             io.readOpt(),
             io.writeOpt(),
@@ -239,9 +241,10 @@ Foam::triSurfaceMesh::triSurfaceMesh(const IOobject& io, const triSurface& s)
         )
     ),
     triSurface(s),
-    triSurfaceRegionSearch(s),
+    triSurfaceRegionSearch(static_cast<const triSurface&>(*this)),
     minQuality_(-1),
-    surfaceClosed_(-1)
+    surfaceClosed_(-1),
+    outsideVolType_(volumeType::UNKNOWN)
 {
     const pointField& pts = triSurface::points();
 
@@ -272,7 +275,7 @@ Foam::triSurfaceMesh::triSurfaceMesh(const IOobject& io)
         (
             io.name(),
             static_cast<const searchableSurface&>(*this).instance(),
-            io.local(),
+            io.local(), //"triSurfaceFields",
             io.db(),
             io.readOpt(),
             io.writeOpt(),
@@ -289,7 +292,8 @@ Foam::triSurfaceMesh::triSurfaceMesh(const IOobject& io)
     ),
     triSurfaceRegionSearch(static_cast<const triSurface&>(*this)),
     minQuality_(-1),
-    surfaceClosed_(-1)
+    surfaceClosed_(-1),
+    outsideVolType_(volumeType::UNKNOWN)
 {
     const pointField& pts = triSurface::points();
 
@@ -323,7 +327,7 @@ Foam::triSurfaceMesh::triSurfaceMesh
         (
             io.name(),
             static_cast<const searchableSurface&>(*this).instance(),
-            io.local(),
+            io.local(), //"triSurfaceFields",
             io.db(),
             io.readOpt(),
             io.writeOpt(),
@@ -340,7 +344,8 @@ Foam::triSurfaceMesh::triSurfaceMesh
     ),
     triSurfaceRegionSearch(static_cast<const triSurface&>(*this), dict),
     minQuality_(-1),
-    surfaceClosed_(-1)
+    surfaceClosed_(-1),
+    outsideVolType_(volumeType::UNKNOWN)
 {
     scalar scaleFactor = 0;
 
@@ -377,6 +382,7 @@ Foam::triSurfaceMesh::~triSurfaceMesh()
 
 void Foam::triSurfaceMesh::clearOut()
 {
+    outsideVolType_ = volumeType::UNKNOWN;
     triSurfaceRegionSearch::clearOut();
     edgeTree_.clear();
     triSurface::clearOut();
@@ -447,9 +453,22 @@ bool Foam::triSurfaceMesh::overlaps(const boundBox& bb) const
 
 void Foam::triSurfaceMesh::movePoints(const pointField& newPoints)
 {
+    outsideVolType_ = volumeType::UNKNOWN;
+
+    // Update local information (instance, event number)
+    searchableSurface::instance() = objectRegistry::time().timeName();
+    objectRegistry::instance() = searchableSurface::instance();
+
+    label event = getEvent();
+    searchableSurface::eventNo() = event;
+    objectRegistry::eventNo() = searchableSurface::eventNo();
+
+    // Clear additional addressing
     triSurfaceRegionSearch::clearOut();
     edgeTree_.clear();
     triSurface::movePoints(newPoints);
+
+    bounds() = boundBox(triSurface::points());
 }
 
 
@@ -714,27 +733,41 @@ void Foam::triSurfaceMesh::getNormal
 
 void Foam::triSurfaceMesh::setField(const labelList& values)
 {
-    autoPtr<triSurfaceLabelField> fldPtr
-    (
-        new triSurfaceLabelField
+    if (foundObject<triSurfaceLabelField>("values"))
+    {
+        triSurfaceLabelField& fld = const_cast<triSurfaceLabelField&>
         (
-            IOobject
+            lookupObject<triSurfaceLabelField>
             (
-                "values",
-                objectRegistry::time().timeName(),  // instance
-                "triSurface",                       // local
+                "values"
+            )
+        );
+        fld.field() = values;
+    }
+    else
+    {
+        autoPtr<triSurfaceLabelField> fldPtr
+        (
+            new triSurfaceLabelField
+            (
+                IOobject
+                (
+                    "values",
+                    objectRegistry::time().timeName(),  // instance
+                    meshSubDir,                         // local
+                    *this,
+                    IOobject::NO_READ,
+                    IOobject::AUTO_WRITE
+                ),
                 *this,
-                IOobject::NO_READ,
-                IOobject::AUTO_WRITE
-            ),
-            *this,
-            dimless,
-            labelField(values)
-        )
-    );
+                dimless,
+                labelField(values)
+            )
+        );
 
-    // Store field on triMesh
-    fldPtr.ptr()->store();
+        // Store field on triMesh
+        fldPtr.ptr()->store();
+    }
 }
 
 
@@ -781,17 +814,26 @@ void Foam::triSurfaceMesh::getVolumeType
 
         if (!tree().bb().contains(pt))
         {
-            // Have to calculate directly as outside the octree
-            volType[pointI] = tree().shapes().getVolumeType(tree(), pt);
+            if (hasVolumeType())
+            {
+                // Precalculate and cache value for this outside point
+                if (outsideVolType_ == volumeType::UNKNOWN)
+                {
+                    outsideVolType_ = tree().shapes().getVolumeType(tree(), pt);
+                }
+                volType[pointI] = outsideVolType_;
+            }
+            else
+            {
+                // Have to calculate directly as outside the octree
+                volType[pointI] = tree().shapes().getVolumeType(tree(), pt);
+            }
         }
         else
         {
             // - use cached volume type per each tree node
             volType[pointI] = tree().getVolumeType(pt);
         }
-
-//        Info<< "octree : " << pt << " = "
-//            << volumeType::names[volType[pointI]] << endl;
     }
 
     indexedOctree<treeDataTriSurface>::perturbTol() = oldTol;
@@ -806,6 +848,24 @@ bool Foam::triSurfaceMesh::writeObject
     IOstream::compressionType cmp
 ) const
 {
+    const Time& runTime = searchableSurface::time();
+    const fileName& instance = searchableSurface::instance();
+
+    if
+    (
+        instance != runTime.timeName()
+     && instance != runTime.system()
+     && instance != runTime.caseSystem()
+     && instance != runTime.constant()
+     && instance != runTime.caseConstant()
+    )
+    {
+        const_cast<triSurfaceMesh&>(*this).searchableSurface::instance() =
+            runTime.timeName();
+        const_cast<triSurfaceMesh&>(*this).objectRegistry::instance() =
+            runTime.timeName();
+    }
+
     fileName fullPath(searchableSurface::objectPath());
 
     if (!mkDir(fullPath.path()))
diff --git a/src/meshTools/searchableSurface/triSurfaceMesh.H b/src/meshTools/searchableSurface/triSurfaceMesh.H
index 5751ead958..0841ce8887 100644
--- a/src/meshTools/searchableSurface/triSurfaceMesh.H
+++ b/src/meshTools/searchableSurface/triSurfaceMesh.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -85,6 +85,9 @@ private:
         //- Is surface closed
         mutable label surfaceClosed_;
 
+        //- If surface is closed, what is type of outside points
+        mutable volumeType outsideVolType_;
+
 
     // Private Member Functions
 
@@ -137,6 +140,9 @@ public:
     //- Runtime type information
     TypeName("triSurfaceMesh");
 
+    //- Return the mesh sub-directory name (usually "triSurface")
+    static word meshSubDir;
+
 
     // Constructors