Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.TestHelper/Deltares.Dam.TestHelper.csproj
===================================================================
diff -u -r6980 -r6987
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.TestHelper/Deltares.Dam.TestHelper.csproj	(.../Deltares.Dam.TestHelper.csproj)	(revision 6980)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.TestHelper/Deltares.Dam.TestHelper.csproj	(.../Deltares.Dam.TestHelper.csproj)	(revision 6987)
@@ -8,6 +8,6 @@
         <ProjectReference Include="..\..\DamClientsLibrary\Deltares.Maps\Deltares.Maps.csproj"/>
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Include="Deltares.DamEngine.Interface" Version="26.1.0.6895"/>
+        <PackageReference Include="Deltares.DamEngine.Interface" Version="25.1.900.67" />
     </ItemGroup>
 </Project>
Index: DamClients/DamUI/trunk/src/Dam/Forms/Deltares.Dam.Forms.csproj
===================================================================
diff -u -r6980 -r6987
--- DamClients/DamUI/trunk/src/Dam/Forms/Deltares.Dam.Forms.csproj	(.../Deltares.Dam.Forms.csproj)	(revision 6980)
+++ DamClients/DamUI/trunk/src/Dam/Forms/Deltares.Dam.Forms.csproj	(.../Deltares.Dam.Forms.csproj)	(revision 6987)
@@ -128,7 +128,7 @@
     </ItemGroup>
     <ItemGroup>
         <PackageReference Include="BruTile" Version="5.0.6"/>
-        <PackageReference Include="Deltares.DamEngine.Interface" Version="26.1.0.6895"/>
+        <PackageReference Include="Deltares.DamEngine.Interface" Version="25.1.900.67" />
         <PackageReference Include="Deltares.Geotechnics.Forms" Version="25.3.0.3120"/>
         <PackageReference Include="Deltares.Standard.Forms.Maps" Version="25.3.0.3119"/>
         <PackageReference Include="GeoAPI" Version="1.7.5"/>
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj
===================================================================
diff -u -r6980 -r6987
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 6980)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 6987)
@@ -49,8 +49,8 @@
         <ProjectReference Include="..\Deltares.Maps\Deltares.Maps.csproj"/>
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Include="Deltares.DamEngine.Data" Version="26.1.0.6895"/>
-        <PackageReference Include="Deltares.DamEngine.Io" Version="26.1.0.6895"/>
+        <PackageReference Include="Deltares.DamEngine.Data" Version="25.1.900.67" />
+        <PackageReference Include="Deltares.DamEngine.Io" Version="25.1.900.67" />
         <PackageReference Include="Deltares.Geotechnics" Version="25.3.0.3116"/>
         <PackageReference Include="LumenWorks.Framework.IO.Core" Version="1.0.1"/>
         <PackageReference Include="System.Data.OleDb" Version="8.0.1"/>
Index: DamClients/DamUI/trunk/src/build/Base.targets
===================================================================
diff -u -r6980 -r6987
--- DamClients/DamUI/trunk/src/build/Base.targets	(.../Base.targets)	(revision 6980)
+++ DamClients/DamUI/trunk/src/build/Base.targets	(.../Base.targets)	(revision 6987)
@@ -8,8 +8,8 @@
         <Company>Deltares</Company>
         <Copyright>Copyright © Deltares $([System.DateTime]::Today.ToString(yyyy))</Copyright>
         <BuildNumber>0</BuildNumber>
-        <Version Condition="$(BuildNumber) == '#BuildNumber#'">26.1.0</Version>
-        <Version Condition="$(BuildNumber) != '#BuildNumber#'">26.1.0.$(BuildNumber)</Version>
+        <Version Condition="$(BuildNumber) == '#BuildNumber#'">25.1.900</Version>
+        <Version Condition="$(BuildNumber) != '#BuildNumber#'">25.1.900.$(BuildNumber)</Version>
     </PropertyGroup>
     <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
         <DebugType>embedded</DebugType>