Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Plugin/ClosingStructuresPlugin.cs
===================================================================
diff -u -re2f91813f3aae8eb2daef6ff1ffac61d197148a8 -r82bd489a2b49af2c1cd898b7944b3c4f5db8a808
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Plugin/ClosingStructuresPlugin.cs	(.../ClosingStructuresPlugin.cs)	(revision e2f91813f3aae8eb2daef6ff1ffac61d197148a8)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Plugin/ClosingStructuresPlugin.cs	(.../ClosingStructuresPlugin.cs)	(revision 82bd489a2b49af2c1cd898b7944b3c4f5db8a808)
@@ -37,7 +37,6 @@
 using Ringtoets.ClosingStructures.Service;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.Calculation;
-using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.Probability;
 using Ringtoets.Common.Data.Structures;
 using Ringtoets.Common.Forms;
Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Service.Test/ClosingStructureDataSynchronizationServiceTest.cs
===================================================================
diff -u -racfa9d23d1770ca3171668552ddbe6d63fdd0dcd -r82bd489a2b49af2c1cd898b7944b3c4f5db8a808
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Service.Test/ClosingStructureDataSynchronizationServiceTest.cs	(.../ClosingStructureDataSynchronizationServiceTest.cs)	(revision acfa9d23d1770ca3171668552ddbe6d63fdd0dcd)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Service.Test/ClosingStructureDataSynchronizationServiceTest.cs	(.../ClosingStructureDataSynchronizationServiceTest.cs)	(revision 82bd489a2b49af2c1cd898b7944b3c4f5db8a808)
@@ -318,13 +318,16 @@
             ClosingStructuresFailureMechanismSectionResult[] sectionResultsWithStructure = failureMechanism.SectionResults
                                                                                                            .Where(sr => calculationsWithStructure.Contains(sr.Calculation))
                                                                                                            .ToArray();
+            StructuresCalculation<ClosingStructuresInput>[] calculationsWithOutput = calculationsWithStructure.Where(c => c.HasOutput)
+                                                                                                             .ToArray();
 
             int originalNumberOfSectionResultAssignments = failureMechanism.SectionResults.Count(sr => sr.Calculation != null);
             ClosingStructuresFailureMechanismSectionResult[] sectionResults = failureMechanism.SectionResults
                                                                                               .Where(sr => calculationsWithStructure.Contains(sr.Calculation))
                                                                                               .ToArray();
 
             // Precondition
+            CollectionAssert.IsNotEmpty(calculationsWithOutput);
             CollectionAssert.IsNotEmpty(calculationsWithStructure);
             CollectionAssert.IsNotEmpty(sectionResultsWithStructure);
 
@@ -339,19 +342,27 @@
             {
                 Assert.IsNull(calculation.InputParameters.Structure);
             }
+            foreach (StructuresCalculation<ClosingStructuresInput> calculation in calculationsWithOutput)
+            {
+                Assert.IsFalse(calculation.HasOutput);
+            }
             foreach (ClosingStructuresFailureMechanismSectionResult sectionResult in sectionResultsWithStructure)
             {
                 Assert.IsNull(sectionResult.Calculation);
             }
 
             IObservable[] array = affectedObjects.ToArray();
-            Assert.AreEqual(1 + calculationsWithStructure.Length + sectionResultsWithStructure.Length,
+            Assert.AreEqual(1 + calculationsWithOutput.Length + calculationsWithStructure.Length + sectionResultsWithStructure.Length,
                             array.Length);
             CollectionAssert.Contains(array, failureMechanism.ClosingStructures);
             foreach (StructuresCalculation<ClosingStructuresInput> calculation in calculationsWithStructure)
             {
                 CollectionAssert.Contains(array, calculation.InputParameters);
             }
+            foreach (StructuresCalculation<ClosingStructuresInput> calculation in calculationsWithOutput)
+            {
+                CollectionAssert.Contains(array, calculation);
+            }
             foreach (ClosingStructuresFailureMechanismSectionResult result in sectionResultsWithStructure)
             {
                 CollectionAssert.Contains(array, result);
@@ -381,7 +392,8 @@
                 {
                     ForeshoreProfile = profile,
                     Structure = structure1
-                }
+                },
+                Output = new ProbabilityAssessmentOutput(0, 0, 0, 0, 0)
             };
             StructuresCalculation<ClosingStructuresInput> calculation2 = new TestClosingStructuresCalculation
             {