Index: Ringtoets/Common/src/Ringtoets.Common.Service/DesignWaterLevelCalculationActivity.cs
===================================================================
diff -u -r16cb360eae0014270ebb6700054afdbbd565ae65 -r2ebc37cd8cfea18e73b2db4975be5a48272ba9ba
--- Ringtoets/Common/src/Ringtoets.Common.Service/DesignWaterLevelCalculationActivity.cs	(.../DesignWaterLevelCalculationActivity.cs)	(revision 16cb360eae0014270ebb6700054afdbbd565ae65)
+++ Ringtoets/Common/src/Ringtoets.Common.Service/DesignWaterLevelCalculationActivity.cs	(.../DesignWaterLevelCalculationActivity.cs)	(revision 2ebc37cd8cfea18e73b2db4975be5a48272ba9ba)
@@ -92,6 +92,8 @@
             }
             else
             {
+                RingtoetsCommonDataSynchronizationService.ClearDesignWaterLevel(hydraulicBoundaryLocation);
+
                 calculationService.Calculate(
                     hydraulicBoundaryLocation,
                     hydraulicBoundaryDatabaseFilePath,