Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs
===================================================================
diff -u -r0c3836acca0399823bbd7f8c9e242a5de7692aa2 -rd16c525c53b03da07dd18853da6b8b256ede5b5a
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision 0c3836acca0399823bbd7f8c9e242a5de7692aa2)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/RingtoetsPipingSurfaceLine.cs	(.../RingtoetsPipingSurfaceLine.cs)	(revision d16c525c53b03da07dd18853da6b8b256ede5b5a)
@@ -368,6 +368,7 @@
             }
 
             Name = fromSurfaceLine.Name;
+            ReferenceLineIntersectionWorldPoint = fromSurfaceLine.ReferenceLineIntersectionWorldPoint;
             SetGeometry(fromSurfaceLine.Points);
             ClearCharacteristicPoints();
             SetCharacteristicPoints(fromSurfaceLine);
@@ -457,7 +458,8 @@
         private bool Equals(RingtoetsPipingSurfaceLine other)
         {
             return string.Equals(Name, other.Name)
-                   && EqualPoints(other.Points)
+                   && Equals(ReferenceLineIntersectionWorldPoint, other.ReferenceLineIntersectionWorldPoint)
+                   && EqualGeometricPoints(other.Points)
                    && EqualCharacteristicPoints(other);
         }
 
@@ -471,7 +473,7 @@
                    && Equals(BottomDitchPolderSide, other.BottomDitchPolderSide);
         }
 
-        private bool EqualPoints(Point3D[] otherPoints)
+        private bool EqualGeometricPoints(Point3D[] otherPoints)
         {
             int nrOfOtherPoints = otherPoints.Length;
             if (Points.Length != nrOfOtherPoints)