diff --git a/ApplicationCode/FileInterface/RifReaderEclipseOutput.cpp b/ApplicationCode/FileInterface/RifReaderEclipseOutput.cpp
index 83a63d5bce..d5121039f4 100644
--- a/ApplicationCode/FileInterface/RifReaderEclipseOutput.cpp
+++ b/ApplicationCode/FileInterface/RifReaderEclipseOutput.cpp
@@ -329,9 +329,6 @@ bool RifReaderEclipseOutput::transferGeometry(const ecl_grid_type* mainEclGrid,
         progInfo.setProgress(3 + lgrIdx);
     }
 
-    mainGrid->setGlobalMatrixModelActiveCellCount(globalMatrixActiveSize);
-    mainGrid->setGlobalFractureModelActiveCellCount(globalFractureActiveSize);
-
     activeCellInfo->computeDerivedData();
 
     return true;
diff --git a/ApplicationCode/ProjectDataModel/RimInputReservoir.cpp b/ApplicationCode/ProjectDataModel/RimInputReservoir.cpp
index bfb6815eef..029882d30c 100644
--- a/ApplicationCode/ProjectDataModel/RimInputReservoir.cpp
+++ b/ApplicationCode/ProjectDataModel/RimInputReservoir.cpp
@@ -93,8 +93,7 @@ void RimInputReservoir::openDataFileSet(const QStringList& filenames)
 
         }
 
-        m_rigReservoir->mainGrid()->setGlobalMatrixModelActiveCellCount(matrixActiveCellCount);
-        m_rigReservoir->mainGrid()->setGlobalFractureModelActiveCellCount(fractureActiveCellCount);
+        m_rigReservoir->activeCellInfo()->computeDerivedData();
 
         return;
     }
diff --git a/ApplicationCode/ProjectDataModel/RimReservoirView.cpp b/ApplicationCode/ProjectDataModel/RimReservoirView.cpp
index ecad221c2f..7097f003a6 100644
--- a/ApplicationCode/ProjectDataModel/RimReservoirView.cpp
+++ b/ApplicationCode/ProjectDataModel/RimReservoirView.cpp
@@ -709,7 +709,7 @@ void RimReservoirView::loadDataAndUpdate()
     CVF_ASSERT(this->cellResult() != NULL);
     this->cellResult()->loadResult();
 
-    if (m_reservoir->reservoirData()->mainGrid()->globalFractureModelActiveCellCount() == 0)
+    if (m_reservoir->reservoirData()->activeCellInfo()->globalFractureModelActiveCellCount() == 0)
     {
         this->cellResult->porosityModel.setUiHidden(true);
     }
diff --git a/ApplicationCode/ProjectDataModel/RimResultDefinition.cpp b/ApplicationCode/ProjectDataModel/RimResultDefinition.cpp
index 29ec38da4a..176dd9a2d4 100644
--- a/ApplicationCode/ProjectDataModel/RimResultDefinition.cpp
+++ b/ApplicationCode/ProjectDataModel/RimResultDefinition.cpp
@@ -63,9 +63,9 @@ void RimResultDefinition::setReservoirView(RimReservoirView* ownerReservoirView)
     // TODO: This code is executed before reservoir is read, and then porosity model is never set to zero
     if (m_reservoirView->eclipseCase() &&
         m_reservoirView->eclipseCase()->reservoirData() &&
-        m_reservoirView->eclipseCase()->reservoirData()->mainGrid() )
+        m_reservoirView->eclipseCase()->reservoirData()->activeCellInfo() )
     {
-        if (m_reservoirView->eclipseCase()->reservoirData()->mainGrid()->globalFractureModelActiveCellCount() == 0)
+        if (m_reservoirView->eclipseCase()->reservoirData()->activeCellInfo()->globalFractureModelActiveCellCount() == 0)
         {
             porosityModel.setUiHidden(true);
         }
diff --git a/ApplicationCode/ProjectDataModel/RimResultReservoir.cpp b/ApplicationCode/ProjectDataModel/RimResultReservoir.cpp
index c3af3f4a8f..8b2265744c 100644
--- a/ApplicationCode/ProjectDataModel/RimResultReservoir.cpp
+++ b/ApplicationCode/ProjectDataModel/RimResultReservoir.cpp
@@ -75,9 +75,6 @@ bool RimResultReservoir::openEclipseGridFile()
             }
 
         }
-        m_rigReservoir->mainGrid()->setGlobalMatrixModelActiveCellCount(matrixActiveCellCount);
-        m_rigReservoir->mainGrid()->setGlobalFractureModelActiveCellCount(fractureActiveCellCount);
-
         m_rigReservoir->mainGrid()->results(RifReaderInterface::MATRIX_RESULTS)->setReaderInterface(readerInterface.p());
         m_rigReservoir->mainGrid()->results(RifReaderInterface::FRACTURE_RESULTS)->setReaderInterface(readerInterface.p());
     }
diff --git a/ApplicationCode/ReservoirDataModel/RigMainGrid.cpp b/ApplicationCode/ReservoirDataModel/RigMainGrid.cpp
index e1e97444be..9bfa1d65c5 100644
--- a/ApplicationCode/ReservoirDataModel/RigMainGrid.cpp
+++ b/ApplicationCode/ReservoirDataModel/RigMainGrid.cpp
@@ -28,9 +28,7 @@ RigMainGrid::RigMainGrid(void)
         m_activeCellPositionMin(cvf::Vec3st::UNDEFINED),
         m_activeCellPositionMax(cvf::Vec3st::UNDEFINED),
         m_validCellPositionMin(cvf::Vec3st::UNDEFINED),
-        m_validCellPositionMax(cvf::Vec3st::UNDEFINED),
-        m_globalMatrixModelActiveCellCount(cvf::UNDEFINED_SIZE_T),
-        m_globalFractureModelActiveCellCount(cvf::UNDEFINED_SIZE_T)
+        m_validCellPositionMax(cvf::Vec3st::UNDEFINED)
 {
     m_matrixModelResults = new RigReservoirCellResults(this);
 	m_fractureModelResults = new RigReservoirCellResults(this);
@@ -80,22 +78,6 @@ void RigMainGrid::initAllSubCellsMainGridCellIndex()
     }
 }
 
-//--------------------------------------------------------------------------------------------------
-/// 
-//--------------------------------------------------------------------------------------------------
-size_t RigMainGrid::globalMatrixModelActiveCellCount() const
-{
-    return m_globalMatrixModelActiveCellCount;
-
-}
-
-//--------------------------------------------------------------------------------------------------
-/// 
-//--------------------------------------------------------------------------------------------------
-size_t RigMainGrid::globalFractureModelActiveCellCount() const
-{
-    return m_globalFractureModelActiveCellCount;
-}
 
 //--------------------------------------------------------------------------------------------------
 /// 
diff --git a/ApplicationCode/ReservoirDataModel/RigMainGrid.h b/ApplicationCode/ReservoirDataModel/RigMainGrid.h
index fe73c4dd78..fbd09d325d 100644
--- a/ApplicationCode/ReservoirDataModel/RigMainGrid.h
+++ b/ApplicationCode/ReservoirDataModel/RigMainGrid.h
@@ -45,11 +45,6 @@ public:
     RigReservoirCellResults*		        results(RifReaderInterface::PorosityModelResultType porosityModel);
     const RigReservoirCellResults*          results(RifReaderInterface::PorosityModelResultType porosityModel) const;
 
-    size_t                                  globalMatrixModelActiveCellCount() const;
-    size_t                                  globalFractureModelActiveCellCount() const;
-    void                                    setGlobalMatrixModelActiveCellCount  (size_t globalMatrixModelActiveCellCount)   { m_globalMatrixModelActiveCellCount   = globalMatrixModelActiveCellCount;  }
-    void                                    setGlobalFractureModelActiveCellCount(size_t globalFractureModelActiveCellCount) { m_globalFractureModelActiveCellCount = globalFractureModelActiveCellCount;}
-
     void                                    matrixModelActiveCellsBoundingBox(cvf::Vec3st& min, cvf::Vec3st& max) const;
     void                                    validCellsBoundingBox(cvf::Vec3st& min, cvf::Vec3st& max) const;
 
@@ -79,9 +74,6 @@ private:
     cvf::ref<RigReservoirCellResults>       m_matrixModelResults;
     cvf::ref<RigReservoirCellResults>       m_fractureModelResults;
 
-    size_t                                  m_globalMatrixModelActiveCellCount;
-    size_t                                  m_globalFractureModelActiveCellCount;
-
     cvf::Vec3st                             m_activeCellPositionMin;
     cvf::Vec3st                             m_activeCellPositionMax;
     cvf::Vec3st                             m_validCellPositionMin;