Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs
===================================================================
diff -u -r6586 -r7077
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs	(.../SoilProfile2DSurfaceLineHelper.cs)	(revision 6586)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilProfile2DSurfaceLineHelper.cs	(.../SoilProfile2DSurfaceLineHelper.cs)	(revision 7077)
@@ -1,4 +1,4 @@
-// Copyright (C) Stichting Deltares 2025. All rights reserved.
+// Copyright (C) Stichting Deltares 2026. All rights reserved.
 // 
 // This file is part of the Dam Engine.
 // 
@@ -23,9 +23,10 @@
 using System.Collections.Generic;
 using System.Linq;
 using Deltares.DamEngine.Data.Geometry;
-//using Deltares.DamEngine.Data.GeometryExport; for Debugging purposes only.
 using Deltares.DamEngine.Data.Standard;
 
+//using Deltares.DamEngine.Data.GeometryExport; for Debugging purposes only.
+
 namespace Deltares.DamEngine.Data.Geotechnics;
 
 /// <summary>
@@ -81,7 +82,7 @@
         {
             return null;
         }
-        
+
         if (defaultSoil == null)
         {
             return null;
@@ -105,11 +106,11 @@
         var result = new SoilProfile2D
         {
             Name = soilProfile2D.Name,
-            Geometry = CreateNewGeometryForSoilProfile2DByCombiningItsGeometryWithSurfaceLine(clonedSurfaceLine, 
+            Geometry = CreateNewGeometryForSoilProfile2DByCombiningItsGeometryWithSurfaceLine(clonedSurfaceLine,
                                                                                               clonedProfile.Geometry)
-        }; 
+        };
 
-        RemoveGeometryDataOfSoilProfileAboveSurfaceLine(clonedSurfaceLine, ref result); 
+        RemoveGeometryDataOfSoilProfileAboveSurfaceLine(clonedSurfaceLine, ref result);
         ReconstructSurfaces(ref result, clonedProfile.Geometry.Left, clonedProfile.Geometry.Right, oldSurfaces, defaultSoil);
         ReconstructPreConsolidations(ref result, clonedProfile);
         result.Geometry.Rebox();
@@ -195,7 +196,7 @@
 
         resultGeometry.NewlyEffectedPoints.AddRange(resultGeometry.Points);
         resultGeometry.NewlyEffectedCurves.AddRange(resultGeometry.Curves);
-        resultGeometry.Surfaces.Clear(); 
+        resultGeometry.Surfaces.Clear();
         resultGeometry.Loops.Clear();
         resultGeometry.Curves.Clear();
         resultGeometry.Points.Clear();
@@ -344,7 +345,7 @@
         result.DeleteLoosePoints();
     }
 
-    private static void ReconstructSurfaces(ref SoilProfile2D result, double oldLeftLimit, double oldRightLimit, 
+    private static void ReconstructSurfaces(ref SoilProfile2D result, double oldLeftLimit, double oldRightLimit,
                                             List<SoilLayer2D> oldSurfaces, Soil defaultSoil)
     {
         result.Surfaces.Clear();
@@ -355,7 +356,7 @@
                 GeometrySurface = surface,
                 Soil = defaultSoil
             };
-             
+
             SoilLayer2D layerFromOldSurfaces = SoilProfile2D.DetermineOriginalLayerFromOldSurfaces(surface, oldSurfaces);
             if (layerFromOldSurfaces != null && layerFromOldSurfaces.Soil != null)
             {
@@ -366,9 +367,9 @@
 
             if (layerFromOldSurfaces == null)
             {
-                SoilLayer2D oldLayer = DetermineLayerIfSurfaceIsLeftOrRightOfOldSurfaces(surface, oldSurfaces, oldLeftLimit, 
+                SoilLayer2D oldLayer = DetermineLayerIfSurfaceIsLeftOrRightOfOldSurfaces(surface, oldSurfaces, oldLeftLimit,
                                                                                          oldRightLimit);
-                
+
                 if (oldLayer != null)
                 {
                     soilLayer2D.IsAquifer = oldLayer.IsAquifer;
@@ -384,6 +385,7 @@
                     soilLayer2D.Soil = defaultSoil;
                 }
             }
+
             result.Surfaces.Add(soilLayer2D);
         }
     }
@@ -396,14 +398,14 @@
         }
     }
 
-    private static SoilLayer2D DetermineLayerIfSurfaceIsLeftOrRightOfOldSurfaces(GeometrySurface surface, 
-        List<SoilLayer2D> oldSurfaces, double oldLeftLimit, double oldRightLimit)
+    private static SoilLayer2D DetermineLayerIfSurfaceIsLeftOrRightOfOldSurfaces(GeometrySurface surface,
+                                                                                 List<SoilLayer2D> oldSurfaces, double oldLeftLimit, double oldRightLimit)
     {
         Point2D point = surface.DetermineValidTestPointBasedOnNewSurface();
         // Check if the new surface is left or right of the old surfaces, if not just return null.
         if (!SoilProfile2D.IsSurfaceLeftOrRightOfOldSurfaces(point, oldSurfaces))
         {
-            return null;       
+            return null;
         }
 
         SoilLayer2D soilLayer = null;
@@ -426,7 +428,7 @@
                 return soilLayer;
             }
         }
-        
+
         // Check if first two right points of the new surface have identical x values (they are vertical).
         // If so, check these points are on the left boundary of the original geometry (so before extending)
         // Then this surface is extended to the left side of the geometry and only then use material to its right. 
@@ -444,5 +446,4 @@
 
         return soilLayer;
     }
-    
 }
\ No newline at end of file