Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml
===================================================================
diff -u -r4751 -r4771
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 4751)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 4771)
@@ -861,6 +861,6 @@
                  en-US="Data has not been imported yet"
                  nl-NL="Gegevens zijn nog niet geïmporteerd"/>
     <Translation ID="ReplaceOldPipingModel"
-                 en-US="The given piping model is no longer supported and is replace by Sellmeijer Revised (WBI)."
+                 en-US="The given piping model is no longer supported and is replaced by Sellmeijer Revised (WBI)."
                  nl-NL="Het gegeven piping model wordt niet langer ondersteund en is vervangen door Sellmeijer Revised (WBI)."/>
 </Translations>
\ No newline at end of file
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamEngineIo/ConversionHelper.cs
===================================================================
diff -u -r4649 -r4771
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamEngineIo/ConversionHelper.cs	(.../ConversionHelper.cs)	(revision 4649)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DamEngineIo/ConversionHelper.cs	(.../ConversionHelper.cs)	(revision 4771)
@@ -247,6 +247,18 @@
     ///     The piping model type bligh
     /// </summary>
     public const int PipingModelTypeBligh = 0;
+    
+    /// <summary>
+    /// The piping model type Sellmeijer.
+    /// Obsolete but still present to inform the user when opening an old file with this model.
+    /// </summary>
+    public const int PipingModelTypeSellmeijer = 1;
+    
+    /// <summary>
+    /// The piping model type Sellmeijer 4 forces.
+    /// Obsolete but still present to inform the user when opening an old file with this model.
+    /// </summary>
+    public const int PipingModelTypeSellmeijer4Forces = 2;
 
     /// <summary>
     ///     The piping model type wti2017
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DAMEnumerations.cs
===================================================================
diff -u -r4539 -r4771
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DAMEnumerations.cs	(.../DAMEnumerations.cs)	(revision 4539)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/DAMEnumerations.cs	(.../DAMEnumerations.cs)	(revision 4771)
@@ -74,9 +74,15 @@
     BishopUpliftVan
 }
 
+/// <summary>
+/// Both models Sellmeijer and Sellmeijer4Forces are not supported anymore
+/// but still present in this enum to be able to inform the user when opening old files where they were selected.
+/// </summary>
 public enum PipingModelType
 {
     Bligh,
+    Sellmeijer,
+    Sellmeijer4Forces,
     Wti2017
 }
 
Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/DamFailureMechanismeCalculationSpecificationTest.cs
===================================================================
diff -u -r4539 -r4771
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/DamFailureMechanismeCalculationSpecificationTest.cs	(.../DamFailureMechanismeCalculationSpecificationTest.cs)	(revision 4539)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/DamFailureMechanismeCalculationSpecificationTest.cs	(.../DamFailureMechanismeCalculationSpecificationTest.cs)	(revision 4771)
@@ -20,6 +20,9 @@
 // All rights reserved.
 
 using Deltares.Dam.Data;
+using Deltares.Dam.TestHelper;
+using Deltares.DamEngine.Data.Standard.Language;
+using Deltares.Standard.Logging;
 using NUnit.Framework;
 
 namespace Deltares.Dam.Tests
@@ -145,5 +148,24 @@
             // Assert
             Assert.That(isVisible, Is.True);
         }
+        
+        [Test]
+        public void GivenDamxFileWithObsoletePipingModel_WhenLoading_ThenModelIsChangedToSellmeijerRevisedAndInformativeMessageIsDisplayed()
+        {
+            const string projectFilename = @"..\..\..\..\..\data\Benchmarks\Piping\Test 2\Integratietest piping 2.damx";
+            
+            DamProjectData damProjectData = ProjectLoader.LoadProjectData(projectFilename);
+
+            string expectedLogMessage = LocalizationManager.GetTranslatedText(typeof(DamFailureMechanismeCalculationSpecification),
+                                                                              "ReplaceOldPipingModel");
+            Assert.That(LogManager.Messages, Has.Count.EqualTo(2));
+            Assert.Multiple(() =>
+            {
+                Assert.That(LogManager.Messages[0].Message, Is.EqualTo(expectedLogMessage));
+                Assert.That(LogManager.Messages[1].Message, Is.EqualTo(expectedLogMessage));
+                Assert.That(damProjectData.DamProjectCalculationSpecification.DamCalculationSpecifications[0].PipingModelType,
+                            Is.EqualTo(PipingModelType.Wti2017));
+            });
+        }
     }
 }
\ No newline at end of file