Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Configurations/PipingCalculationConfigurationWriter.cs
===================================================================
diff -u -re507c88f2863ff7bc93505caf71c5f8025fb48c0 -r681fe6f5c04ea2acdb99801dd749a11a174d5b42
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Configurations/PipingCalculationConfigurationWriter.cs	(.../PipingCalculationConfigurationWriter.cs)	(revision e507c88f2863ff7bc93505caf71c5f8025fb48c0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Configurations/PipingCalculationConfigurationWriter.cs	(.../PipingCalculationConfigurationWriter.cs)	(revision 681fe6f5c04ea2acdb99801dd749a11a174d5b42)
@@ -55,11 +55,11 @@
                                              configuration.AssessmentLevel);
             WriteElementWhenContentAvailable(writer,
                                              ConfigurationSchemaIdentifiers.HydraulicBoundaryLocationElement,
-                                             configuration.HydraulicBoundaryLocation);
+                                             configuration.HydraulicBoundaryLocationName);
 
             WriteElementWhenContentAvailable(writer,
                                              PipingCalculationConfigurationSchemaIdentifiers.SurfaceLineElement,
-                                             configuration.SurfaceLine);
+                                             configuration.SurfaceLineName);
             WriteElementWhenContentAvailable(writer,
                                              PipingCalculationConfigurationSchemaIdentifiers.EntryPointLElement,
                                              configuration.EntryPointL);
@@ -68,10 +68,10 @@
                                              configuration.ExitPointL);
             WriteElementWhenContentAvailable(writer,
                                              PipingCalculationConfigurationSchemaIdentifiers.StochasticSoilModelElement,
-                                             configuration.StochasticSoilModel);
+                                             configuration.StochasticSoilModelName);
             WriteElementWhenContentAvailable(writer,
                                              PipingCalculationConfigurationSchemaIdentifiers.StochasticSoilProfileElement,
-                                             configuration.StochasticSoilProfile);
+                                             configuration.StochasticSoilProfileName);
 
             writer.WriteStartElement(ConfigurationSchemaIdentifiers.StochastsElement);