Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs
===================================================================
diff -u -r989be010778ab44a778d79f0e2d892343acf0c0d -r842e446f88e513e8be98fa0cf6c111f74d19de6c
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs	(.../GrassCoverErosionInwardsPlugin.cs)	(revision 989be010778ab44a778d79f0e2d892343acf0c0d)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsPlugin.cs	(.../GrassCoverErosionInwardsPlugin.cs)	(revision 842e446f88e513e8be98fa0cf6c111f74d19de6c)
@@ -111,7 +111,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = RingtoetsCommonFormsResources.DikeProfile,
                 FileFilterGenerator = DikeProfileImporterFileFilterGenerator(),
-                IsEnabled = IsDikeProfileImporterEnabled,
+                IsEnabled = context => context.ParentAssessmentSection.ReferenceLine != null,
                 VerifyUpdates = context => VerifyDikeProfilesShouldUpdate(context,
                                                                           Resources.GrassCoverErosionInwardsPlugin_VerifyDikeProfileImport_When_importing_DikeProfiles_Calculation_output_will_be_cleared_confirm)
             };
@@ -131,7 +131,7 @@
                 Image = RingtoetsCommonFormsResources.DikeProfile,
                 FileFilterGenerator = DikeProfileImporterFileFilterGenerator(),
                 CurrentPath = context => context.WrappedData.SourcePath,
-                IsEnabled = IsDikeProfileImporterEnabled,
+                IsEnabled = context => context.WrappedData.SourcePath != null,
                 VerifyUpdates = context => VerifyDikeProfilesShouldUpdate(context,
                                                                           Resources.GrassCoverErosionInwardsPlugin_VerifyDikeProfileUpdate_When_updating_Calculation_with_DikeProfile_data_output_will_be_cleared_confirm)
             };
@@ -900,11 +900,6 @@
                                            RingtoetsCommonIOResources.Shape_file_filter_Description);
         }
 
-        private static bool IsDikeProfileImporterEnabled(DikeProfilesContext context)
-        {
-            return context.ParentAssessmentSection.ReferenceLine != null;
-        }
-
         private bool VerifyDikeProfilesShouldUpdate(DikeProfilesContext context, string query)
         {
             var changeHandler = new FailureMechanismCalculationChangeHandler(context.ParentFailureMechanism,
Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs
===================================================================
diff -u -r5cede57abe00f676961d9642a0f0621aadd9f762 -r842e446f88e513e8be98fa0cf6c111f74d19de6c
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 5cede57abe00f676961d9642a0f0621aadd9f762)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 842e446f88e513e8be98fa0cf6c111f74d19de6c)
@@ -106,7 +106,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSurfaceLineIcon,
                 FileFilterGenerator = RingtoetsPipingSurfaceLineFileFilter,
-                IsEnabled = IsSurfaceLineImporterEnabled,
+                IsEnabled = context => context.AssessmentSection.ReferenceLine != null,
                 CreateFileImporter = (context, filePath) => PipingSurfaceLinesCsvImporter(context, filePath, new ImportMessageProvider(), new RingtoetsPipingSurfaceLineReplaceDataStrategy(context.FailureMechanism)),
                 VerifyUpdates = context => VerifyPipingSurfaceLineUpdates(context, Resources.PipingPlugin_VerifyRingtoetsPipingSurfaceLineImport_When_importing_surfacelines_calculation_output_will_be_cleared_confirm)
             };
@@ -117,7 +117,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSoilProfileIcon,
                 FileFilterGenerator = StochasticSoilModelFileFilter,
-                IsEnabled = StochasticSoilModelImporterEnabled,
+                IsEnabled = context => context.AssessmentSection.ReferenceLine != null,
                 CreateFileImporter = (context, filePath) => StochasticSoilModelImporter(context, filePath, new ImportMessageProvider(), new StochasticSoilModelReplaceDataStrategy(context.FailureMechanism)),
                 VerifyUpdates = context => VerifyStochasticSoilModelUpdates(context, Resources.PipingPlugin_VerifyStochasticSoilModelImport_When_importing_StochasticSoilModels_calculation_output_will_be_cleared_confirm)
             };
@@ -152,7 +152,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSurfaceLineIcon,
                 FileFilterGenerator = RingtoetsPipingSurfaceLineFileFilter,
-                IsEnabled = IsSurfaceLineImporterEnabled,
+                IsEnabled = context => context.WrappedData.SourcePath != null,
                 CurrentPath = context => context.WrappedData.SourcePath,
                 CreateFileImporter = (context, filePath) => PipingSurfaceLinesCsvImporter(context, filePath, new UpdateMessageProvider(), new RingtoetsPipingSurfaceLineUpdateDataStrategy(context.FailureMechanism)),
                 VerifyUpdates = context => VerifyPipingSurfaceLineUpdates(context, Resources.PipingPlugin_VerifyRingtoetsPipingSurfaceLineUpdates_When_updating_surfacelines_definitions_assigned_to_calculation_output_will_be_cleared_confirm)
@@ -164,7 +164,7 @@
                 Category = RingtoetsCommonFormsResources.Ringtoets_Category,
                 Image = PipingFormsResources.PipingSoilProfileIcon,
                 FileFilterGenerator = StochasticSoilModelFileFilter,
-                IsEnabled = StochasticSoilModelImporterEnabled,
+                IsEnabled = context => context.WrappedData.SourcePath != null,
                 CurrentPath = context => context.WrappedData.SourcePath,
                 CreateFileImporter = (context, filePath) => StochasticSoilModelImporter(context, filePath, new UpdateMessageProvider(), new StochasticSoilModelUpdateDataStrategy(context.FailureMechanism)),
                 VerifyUpdates = context => VerifyStochasticSoilModelUpdates(context, Resources.PipingPlugin_VerifyStochasticSoilModelUpdates_When_updating_StochasticSoilModel_definitions_assigned_to_calculation_output_will_be_cleared_confirm)
@@ -361,11 +361,6 @@
                                                    updateStrategy);
         }
 
-        private static bool StochasticSoilModelImporterEnabled(StochasticSoilModelCollectionContext context)
-        {
-            return context.AssessmentSection.ReferenceLine != null;
-        }
-
         private bool VerifyStochasticSoilModelUpdates(StochasticSoilModelCollectionContext context, string query)
         {
             var changeHandler = new FailureMechanismCalculationChangeHandler(context.FailureMechanism,
@@ -1079,11 +1074,6 @@
                                                      strategy);
         }
 
-        private static bool IsSurfaceLineImporterEnabled(RingtoetsPipingSurfaceLinesContext context)
-        {
-            return context.AssessmentSection.ReferenceLine != null;
-        }
-
         private static FileFilterGenerator RingtoetsPipingSurfaceLineFileFilter
         {
             get
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/RingtoetsPipingSurfaceLinesContextUpdateInfoTest.cs
===================================================================
diff -u -r81fa8a9bf3bd503cbd280e88b8f6037a840cff12 -r842e446f88e513e8be98fa0cf6c111f74d19de6c
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/RingtoetsPipingSurfaceLinesContextUpdateInfoTest.cs	(.../RingtoetsPipingSurfaceLinesContextUpdateInfoTest.cs)	(revision 81fa8a9bf3bd503cbd280e88b8f6037a840cff12)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/RingtoetsPipingSurfaceLinesContextUpdateInfoTest.cs	(.../RingtoetsPipingSurfaceLinesContextUpdateInfoTest.cs)	(revision 842e446f88e513e8be98fa0cf6c111f74d19de6c)
@@ -90,7 +90,7 @@
         }
 
         [Test]
-        public void IsEnabled_ReferenceLineNull_ReturnFalse()
+        public void IsEnabled_SurfaceLineCollectionSourcePathNull_ReturnFalse()
         {
             // Setup
             var mocks = new MockRepository();
@@ -111,17 +111,16 @@
         }
 
         [Test]
-        public void IsEnabled_ReferenceLineSet_ReturnTrue()
+        public void IsEnabled_SurfaceLineCollectionSourcePathSet_ReturnTrue()
         {
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            assessmentSection.ReferenceLine = new ReferenceLine();
-
             var failureMechanism = new PipingFailureMechanism();
             var surfaceLines = new RingtoetsPipingSurfaceLineCollection();
+            surfaceLines.AddRange(Enumerable.Empty<RingtoetsPipingSurfaceLine>(),"some/path");
 
             var context = new RingtoetsPipingSurfaceLinesContext(surfaceLines, failureMechanism, assessmentSection);
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/StochasticSoilModelCollectionContextUpdateInfoTest.cs
===================================================================
diff -u -ra70cb733eb761229173777b9f6cd1b977830b24b -r842e446f88e513e8be98fa0cf6c111f74d19de6c
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/StochasticSoilModelCollectionContextUpdateInfoTest.cs	(.../StochasticSoilModelCollectionContextUpdateInfoTest.cs)	(revision a70cb733eb761229173777b9f6cd1b977830b24b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/UpdateInfos/StochasticSoilModelCollectionContextUpdateInfoTest.cs	(.../StochasticSoilModelCollectionContextUpdateInfoTest.cs)	(revision 842e446f88e513e8be98fa0cf6c111f74d19de6c)
@@ -91,16 +91,17 @@
         }
 
         [Test]
-        public void IsEnabled_ReferenceLineNull_ReturnFalse()
+        public void IsEnabled_SoilModelCollectionSourcePathNull_ReturnFalse()
         {
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
             var failureMechanism = new PipingFailureMechanism();
+            var stochasticSoilModel = new StochasticSoilModelCollection();
 
-            var context = new StochasticSoilModelCollectionContext(failureMechanism.StochasticSoilModels, failureMechanism, assessmentSection);
+            var context = new StochasticSoilModelCollectionContext(stochasticSoilModel, failureMechanism, assessmentSection);
 
             // Call
             bool isEnabled = updateInfo.IsEnabled(context);
@@ -111,18 +112,18 @@
         }
 
         [Test]
-        public void IsEnabled_ReferenceLineSet_ReturnTrue()
+        public void IsEnabled_SoilModelCollectionSourcePathSet_ReturnTrue()
         {
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            assessmentSection.ReferenceLine = new ReferenceLine();
-
             var failureMechanism = new PipingFailureMechanism();
+            var stochasticSoilModel = new StochasticSoilModelCollection();
+            stochasticSoilModel.AddRange(Enumerable.Empty<StochasticSoilModel>(), "some/path");
 
-            var context = new StochasticSoilModelCollectionContext(failureMechanism.StochasticSoilModels, failureMechanism, assessmentSection);
+            var context = new StochasticSoilModelCollectionContext(stochasticSoilModel, failureMechanism, assessmentSection);
 
             // Call
             bool isEnabled = updateInfo.IsEnabled(context);