Index: Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/StochasticSoilModelUpdateExtensions.cs
===================================================================
diff -u -ra5714fc0488030773fff50dfc82041c6cb9edc2f -ra294987551b0b2d8a27b6e1bc6235b0e2351b6f4
--- Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/StochasticSoilModelUpdateExtensions.cs	(.../StochasticSoilModelUpdateExtensions.cs)	(revision a5714fc0488030773fff50dfc82041c6cb9edc2f)
+++ Application/Ringtoets/src/Application.Ringtoets.Storage/Update/Piping/StochasticSoilModelUpdateExtensions.cs	(.../StochasticSoilModelUpdateExtensions.cs)	(revision a294987551b0b2d8a27b6e1bc6235b0e2351b6f4)
@@ -110,8 +110,8 @@
             }
             for (int i = 0; i < existingPoints.Length; i++)
             {
-                Point2D existingPoint = new Point2D(Convert.ToDouble(existingPoints[i].X),
-                                                    Convert.ToDouble(existingPoints[i].Y));
+                Point2D existingPoint = new Point2D(existingPoints[i].X.ToNullAsNaN(),
+                                                    existingPoints[i].Y.ToNullAsNaN());
                 if (!Math2D.AreEqualPoints(existingPoint, geometry[i]))
                 {
                     return true;