Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs
===================================================================
diff -u -r4540 -r4556
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 4540)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 4556)
@@ -89,6 +89,11 @@
         CuBottom = aSoil.CuBottom;
         UsePop = aSoil.UsePop;
         StrengthIncreaseExponent = aSoil.StrengthIncreaseExponent;
+        if ((ShearStrengthModel == Geotechnics.ShearStrengthModel.SigmaTauCurve) && (aSoil.SigmaTauCurve != null))
+        {
+            SigmaTauCurve = new SigmaTauCurve();
+            SigmaTauCurve.Assign(aSoil.SigmaTauCurve);
+        }
     }
 
     #region property Name
@@ -261,5 +266,10 @@
     /// </value>
     public double SlopeRestProfile { get; set; } = double.NaN;
 
+    /// <summary>
+    /// The sigma tau curve (for Shear Strength Model = SigmaTauCurve)  
+    /// </summary>
+    public SigmaTauCurve SigmaTauCurve { get; set; }
+
     #endregion
 }
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