Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/BackwardCompatibility.cs
===================================================================
diff -u -r2909 -r2937
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/BackwardCompatibility.cs	(.../BackwardCompatibility.cs)	(revision 2909)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/BackwardCompatibility.cs	(.../BackwardCompatibility.cs)	(revision 2937)
@@ -63,21 +63,17 @@
                     // Older DamLive projects do not have scenarios defined, so add them if needed
                     AddScenarioIfNoScenariosDefined(location);
 
-                    double? value;
                     if (fileVersion <= 1)
                     {
-                        value = AttributeValueFromNode(node, "PolderLevel");
-                        UpdatePolderLevel(location, value);
-                        value = AttributeValueFromNode(node, "HeadPL2");
-                        UpdateHeadPl2(location, value);
+                        UpdatePolderLevel(location, AttributeDoubleValueFromNode(node, "PolderLevel"));
+                        UpdateHeadPl2(location, AttributeDoubleValueFromNode(node, "HeadPL2"));
+                        UpdateZoneType(location, AttributeStringValueFromNode(node, "StabilityZoneType"));
                     }
 
                     if (fileVersion == 0)
                     {
-                        value = AttributeValueFromNode(node, "HeadPl3");
-                        UpdateHeadPl3(location, value);
-                        value = AttributeValueFromNode(node, "HeadPl4");
-                        UpdateHeadPl4(location, value);
+                        UpdateHeadPl3(location, AttributeDoubleValueFromNode(node, "HeadPl3"));
+                        UpdateHeadPl4(location, AttributeDoubleValueFromNode(node, "HeadPl4"));
                     }
                 }
             }
@@ -87,15 +83,15 @@
         {
             if (location.Scenarios.Count == 0)
             {
-                location.Scenarios.Add(new Scenario()
+                location.Scenarios.Add(new Scenario
                 {
                     RiverLevel = 0.0,
                     RiverLevelLow = 0.0
                 });
             }
         }
 
-        private static double? AttributeValueFromNode(XmlNode node, string attributeName)
+        private static double? AttributeDoubleValueFromNode(XmlNode node, string attributeName)
         {
             double? value = null;
             var attribute = node.Attributes?[attributeName];
@@ -106,6 +102,12 @@
             return value;
         }
 
+        private static string AttributeStringValueFromNode(XmlNode node, string attributeName)
+        {
+            XmlAttribute attribute = node.Attributes?[attributeName];
+            return attribute?.Value;
+        }
+
         private static void UpdatePolderLevel(Location location, double? value)
         {
             if (value != null)
@@ -141,5 +143,19 @@
             }
         }
 
+        private static void UpdateZoneType(Location location, string value)
+        {
+            if (!string.IsNullOrWhiteSpace(value))
+            {
+                if (value.Equals("ZoneAreas"))
+                {
+                    location.StabilityZoneType = MStabZonesType.NoZones;
+                }
+                else
+                {
+                    location.StabilityZoneType = (MStabZonesType) Enum.Parse(typeof(MStabZonesType), value);
+                }
+            }
+        }
     }
 }
\ No newline at end of file
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs
===================================================================
diff -u -r2909 -r2937
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs	(.../DamProject.cs)	(revision 2909)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamProject.cs	(.../DamProject.cs)	(revision 2937)
@@ -318,9 +318,12 @@
         }
 
         /// <summary>Updates the current file version for non-versioned files (projects created with DAM 19.1 or earlier)
-        /// Set FileVersion to 0 (for DAM versions 18.1.3 and earlier).</summary>
-        /// Set FileVersion to 1 (for DAM version 19.1.1)</summary>
-        /// FileVersion 2 is the first versioned file (for DAM version 20.1.1)</summary>
+        /// <list type="bullet">
+        /// <item>Set FileVersion to 0 (for DAM versions 18.1.3 and earlier).</item>
+        /// <item>Set FileVersion to 1 (for DAM version 19.1.1)</item>
+        /// <item>FileVersion 2 is the first versioned file (for DAM version 20.1.1)</item>
+        /// </list>
+        /// </summary>
         private void UpdateVersionInfoForNonVersionedFiles(string fileVersion)
         {
             if (this.DamProjectData.VersionInfo.FileVersionAsRead == 0)