Index: DamClients/DamUI/branches/DamUI 19.3/src/Dam/Tests/WaterBoardPostProcessRelativeProfilesTest.cs
===================================================================
diff -u -r3703 -r3767
--- DamClients/DamUI/branches/DamUI 19.3/src/Dam/Tests/WaterBoardPostProcessRelativeProfilesTest.cs	(.../WaterBoardPostProcessRelativeProfilesTest.cs)	(revision 3703)
+++ DamClients/DamUI/branches/DamUI 19.3/src/Dam/Tests/WaterBoardPostProcessRelativeProfilesTest.cs	(.../WaterBoardPostProcessRelativeProfilesTest.cs)	(revision 3767)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Linq;
 using Deltares.Dam.Data;
 using Deltares.Geotechnics.GeotechnicalGeometry;
@@ -90,9 +91,20 @@
 
         private static void AssertSoilProfile1D(double offset, SoilProfile1D soilProfile1D)
         {
-            Assert.AreEqual(1.0 + offset, soilProfile1D.TopLevel, CTolerance);
-            Assert.AreEqual(-1.0 + offset, soilProfile1D.Layers[1].TopLevel, CTolerance);
-            Assert.AreEqual(-10.0 + offset, soilProfile1D.BottomLevel, CTolerance);
+            // If there is no move, than there is no added layer
+            if (Math.Abs(offset) < CTolerance)
+            {
+                Assert.AreEqual(1.0 + offset, soilProfile1D.TopLevel, CTolerance);
+                Assert.AreEqual(-1.0 + offset, soilProfile1D.Layers[1].TopLevel, CTolerance);
+                Assert.AreEqual(-10.0 + offset, soilProfile1D.BottomLevel, CTolerance);
+            }
+            else
+            {
+                // If there is a move, than there is one added (top) layer
+                Assert.AreEqual(2.0 + offset, soilProfile1D.TopLevel, CTolerance);
+                Assert.AreEqual(-1.0 + offset, soilProfile1D.Layers[2].TopLevel, CTolerance);
+                Assert.AreEqual(-10.0 + offset, soilProfile1D.BottomLevel, CTolerance);
+            }
         }
 
         [Test]
Index: DamClients/DamUI/branches/DamUI 19.3/src/DamClientsLibrary/Deltares.Dam.Data/WaterBoardPostProcessRelativeProfiles.cs
===================================================================
diff -u -r3766 -r3767
--- DamClients/DamUI/branches/DamUI 19.3/src/DamClientsLibrary/Deltares.Dam.Data/WaterBoardPostProcessRelativeProfiles.cs	(.../WaterBoardPostProcessRelativeProfiles.cs)	(revision 3766)
+++ DamClients/DamUI/branches/DamUI 19.3/src/DamClientsLibrary/Deltares.Dam.Data/WaterBoardPostProcessRelativeProfiles.cs	(.../WaterBoardPostProcessRelativeProfiles.cs)	(revision 3767)
@@ -101,7 +101,7 @@
                                 // If the top of the profile is moved below the top of the surface level, a gap appears which will be filled in later in the UI
                                 // to the combined 2D. However, for Piping calculation the 1D profile itself needs to start at least at the top of the surface line
                                 // too in order to perform a correct calculation. So extend the 1D profile here too!
-                                if (profileTopLevel < topSurfaceline)
+                                if (Math.Abs(deltaZ) > 1e-6 && profileTopLevel < topSurfaceline)
                                 {
                                     var newTopLayer = new SoilLayer1D
                                     {