Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculator.cs
===================================================================
diff -u -r1075 -r1080
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculator.cs	(.../DesignCalculator.cs)	(revision 1075)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculator.cs	(.../DesignCalculator.cs)	(revision 1080)
@@ -284,11 +284,12 @@
                                                      List<LogMessage> calculationMessages, List<DesignResult> designCalculations)
         {
             var designResults = new List<DesignResult>();
+            var location = damKernelInput.Location;
+            var surfaceLine = location.SurfaceLine;
+            var orgSurfaceLine = surfaceLine;
             try
             {
                 List<LogMessage> locationCalculationMessages = new List<LogMessage>();
-                var location = damKernelInput.Location;
-                var surfaceLine = location.SurfaceLine;
                 double orgShoulderLength = surfaceLine.DetermineShoulderWidth();
                 double orgShoulderHeight = surfaceLine.DetermineShoulderHeight();
 
@@ -367,6 +368,7 @@
             }
             finally
             {
+                damKernelInput.Location.SurfaceLine = orgSurfaceLine;
                 foreach (var designResult in designResults)
                 {
                     designCalculations.Add(designResult);