Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs
===================================================================
diff -u -r4540 -r4562
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs	(.../FillXmlInputFromDam.cs)	(revision 4540)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlInputFromDam.cs	(.../FillXmlInputFromDam.cs)	(revision 4562)
@@ -493,6 +493,19 @@
             inputSoil.StrengthIncreaseExponent = soil.StrengthIncreaseExponent;
             inputSoil.RatioCuPcSpecified = !double.IsNaN(soil.RatioCuPc);
             inputSoil.RatioCuPc = soil.RatioCuPc;
+            if (soil.SigmaTauCurve != null)
+            {
+                inputSoil.SigmaTauCurve = new SigmaTauCurveSigmaTauPoint[soil.SigmaTauCurve.Points.Count];
+                for (var j = 0; j < soil.SigmaTauCurve.Points.Count; j++)
+                {
+                    inputSoil.SigmaTauCurve[j] = new SigmaTauCurveSigmaTauPoint
+                    {
+                        Sigma = soil.SigmaTauCurve.Points[j].Sigma,
+                        Tau = soil.SigmaTauCurve.Points[j].Tau
+                    };
+                }
+            }
+
             inputSoils[i] = inputSoil;
         }
     }