Index: src/Deltares.DSoilModel.Data/DSoilModelProject.cs
===================================================================
diff -u -r437 -r452
--- src/Deltares.DSoilModel.Data/DSoilModelProject.cs	(.../DSoilModelProject.cs)	(revision 437)
+++ src/Deltares.DSoilModel.Data/DSoilModelProject.cs	(.../DSoilModelProject.cs)	(revision 452)
@@ -943,21 +943,27 @@
             }
             else if (sender == CurrentSoilSegments)
             {
-                // added segments ?
-                foreach (var segment in currentSoilSegments)
+                var args = e as DataListModifiedArgs;
+                if (args == null)
                 {
-                    if (!soilSegments.Contains(segment))
-                    {
-                        soilSegments.Add(segment);
-                    }
+                    return;
                 }
-                // deleted segment ?
-                foreach (var segment in soilSegments.Where(s => s.Mechanism == CurrentFailureMechanism).ToArray())
+
+                switch (args.Action)
                 {
-                    if (!currentSoilSegments.Contains(segment))
-                    {
-                        soilSegments.Remove(segment);
-                    }
+                    case ListModifyAction.Delete:
+                        foreach (var segment in e.Objects.Cast<SoilSegment>().ToList())
+                        {
+                            soilSegments.Remove(segment);
+                        }
+                        break;
+                    case ListModifyAction.Add: 
+                    case ListModifyAction.Insert:
+                        foreach (var segment in e.Objects.Cast<SoilSegment>().ToList())
+                        {
+                            soilSegments.Add(segment);
+                        }
+                        break;
                 }
             }
         }
@@ -1029,9 +1035,9 @@
             soilProfile2D.YEnd = 0;
 
             var loc = new GeographicPoint
-                {
-                    X = soilProfile2D.Geometry.Right*0.5, Y = 0
-                };
+            {
+                X = soilProfile2D.Geometry.Right*0.5, Y = 0
+            };
             soilProfile2D.Location = loc;
             soilProfiles2D.Add(soilProfile2D);
             return soilProfile2D;
@@ -1075,7 +1081,7 @@
                     newSegment.Assign(selectedSegment);
                     var oldName = selectedSegment.Name;
                     newSegment.Name = UniqueNameProvider.ProvideNewUniqueName(SoilSegments, oldName);
-                    RearrangeSegmentCpts(selectedSegment , newSegment, xSplit);
+                    RearrangeSegmentCpts(selectedSegment, newSegment, xSplit);
                     RearrangeSegmentBorings(selectedSegment, newSegment, xSplit);
                     RearrangeSegmentPoints(selectedSegment, newSegment, xSplit);
                     var index = SoilSegments.IndexOf(selectedSegment);
@@ -1122,6 +1128,7 @@
                 LinkItemToSegments(boring, segments);
             }
         }
+
         private void LinkItemToSegments(IGeographic item, List<SoilSegment> segments)
         {
             double nearestDistance = double.MaxValue;
@@ -1300,7 +1307,7 @@
             var n = selectedSegment.Points.Count - 1;
             if (Distance(selectedSegment.Points[n], selectedSegment.Points[n-1]) < geoTolerance) selectedSegment.Points.RemoveAt(n-1);
             if (Distance(newSegment.Points[0], newSegment.Points[1]) < geoTolerance) newSegment.Points.RemoveAt(1);
-        }
+            }
 
         private double Distance(IGeographicPoint point1, IGeographicPoint point2)
         {
@@ -1321,8 +1328,7 @@
             {
                 soil.ShearStrengthModel = ShearStrengthModel.CuCalculated;
                 soil.UsePop = false;
-
             }
-        }          
+        }
     }
 }
\ No newline at end of file