Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs
===================================================================
diff -u -rbbc8a9be41850f8de8086c8bdda711f52a6767e9 -r1604f9968c87181d6e94d89b287fc8dd5a85854b
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs	(.../AssessmentSectionMergeHandler.cs)	(revision bbc8a9be41850f8de8086c8bdda711f52a6767e9)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs	(.../AssessmentSectionMergeHandler.cs)	(revision 1604f9968c87181d6e94d89b287fc8dd5a85854b)
@@ -26,6 +26,7 @@
 using Core.Common.Gui.Commands;
 using log4net;
 using Ringtoets.ClosingStructures.Data;
+using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.Hydraulics;
@@ -107,7 +108,7 @@
 
         #region HydraulicBoundaryLocationCalculations
 
-        private static void MergeHydraulicBoundaryLocations(AssessmentSection targetAssessmentSection, AssessmentSection sourceAssessmentSection)
+        private static void MergeHydraulicBoundaryLocations(IAssessmentSection targetAssessmentSection, IAssessmentSection sourceAssessmentSection)
         {
             MergeHydraulicBoundaryLocationCalculations(targetAssessmentSection.WaterLevelCalculationsForFactorizedSignalingNorm,
                                                        sourceAssessmentSection.WaterLevelCalculationsForFactorizedSignalingNorm);