Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj
===================================================================
diff -u -r74d2b52b152bcccfdcf9f1143f5109d6357084a6 -ra940166534b3dd6e778de2e7c8e7e5241f3d3381
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj	(.../Ringtoets.Piping.IO.csproj)	(revision 74d2b52b152bcccfdcf9f1143f5109d6357084a6)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Ringtoets.Piping.IO.csproj	(.../Ringtoets.Piping.IO.csproj)	(revision a940166534b3dd6e778de2e7c8e7e5241f3d3381)
@@ -49,8 +49,9 @@
     <Compile Include="Configurations\PipingCalculationConfigurationExporter.cs" />
     <Compile Include="Configurations\PipingCalculationConfigurationWriter.cs" />
     <Compile Include="Importers\IStochasticSoilModelUpdateModelStrategy.cs" />
-    <Compile Include="Importers\ISurfaceLineUpdateDataStrategy.cs" />
     <Compile Include="Configurations\PipingCalculationConfigurationImporter.cs" />
+    <Compile Include="Importers\PipingSurfaceLineTransformer.cs" />
+    <Compile Include="Importers\RingtoetsPipingSurfaceLineExtensions.cs" />
     <Compile Include="Importers\StochasticSoilModelImporter.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
@@ -74,8 +75,6 @@
     <Compile Include="SoilProfile\Schema\StochasticSoilProfileTableColumns.cs" />
     <Compile Include="SoilProfile\SoilDatabaseVersionReader.cs" />
     <Compile Include="SoilProfile\StochasticSoilProfileReader.cs" />
-    <Compile Include="SurfaceLines\CharacteristicPoints.cs" />
-    <Compile Include="SurfaceLines\CharacteristicPointsCsvReader.cs" />
     <Compile Include="Exceptions\PipingSoilProfileReadException.cs" />
     <Compile Include="SoilProfile\CriticalProfileProperties.cs" />
     <Compile Include="SoilProfile\SoilLayer2DReader.cs" />
@@ -84,7 +83,6 @@
     <Compile Include="SoilProfile\PipingSoilProfileReader.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="SoilProfile\Schema\SoilProfileTableColumns.cs" />
-    <Compile Include="SurfaceLines\PipingSurfaceLinesCsvReader.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\..\Core\Common\src\Core.Common.Base\Core.Common.Base.csproj">