Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/RingtoetsPipingSurfaceLineUpdateDataStrategy.cs
===================================================================
diff -u -r7d572f6fd93d08cbdc472dd334ed3655b5d7ae36 -r0c3836acca0399823bbd7f8c9e242a5de7692aa2
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/RingtoetsPipingSurfaceLineUpdateDataStrategy.cs	(.../RingtoetsPipingSurfaceLineUpdateDataStrategy.cs)	(revision 7d572f6fd93d08cbdc472dd334ed3655b5d7ae36)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/FileImporter/RingtoetsPipingSurfaceLineUpdateDataStrategy.cs	(.../RingtoetsPipingSurfaceLineUpdateDataStrategy.cs)	(revision 0c3836acca0399823bbd7f8c9e242a5de7692aa2)
@@ -98,7 +98,7 @@
 
             if (!surfaceLineToUpdate.Equals(matchingSurfaceLine))
             {
-                surfaceLineToUpdate.Update(matchingSurfaceLine);
+                surfaceLineToUpdate.CopyProperties(matchingSurfaceLine);
 
                 affectedObjects.AddRange(UpdateSurfaceLineDependentData(surfaceLineToUpdate));
                 affectedObjects.AddRange(UpdateStochasticSoilModel(surfaceLineToUpdate));