Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneLocationCalculationActivity.cs
===================================================================
diff -u -ra494bde768f1b989d31bff6a801a1816d6f9692e -rf49d4d7c45ecd482bd93b04bce65b6592004b0ce
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneLocationCalculationActivity.cs	(.../DuneLocationCalculationActivity.cs)	(revision a494bde768f1b989d31bff6a801a1816d6f9692e)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Service/DuneLocationCalculationActivity.cs	(.../DuneLocationCalculationActivity.cs)	(revision f49d4d7c45ecd482bd93b04bce65b6592004b0ce)
@@ -20,7 +20,6 @@
 // All rights reserved.
 
 using System;
-using Core.Common.Base.Service;
 using Ringtoets.Common.Service;
 using Ringtoets.DuneErosion.Data;
 using Ringtoets.DuneErosion.Service.Properties;
@@ -69,26 +68,17 @@
 
         protected override bool Validate()
         {
-            if (AlreadyCalculated)
-            {
-                State = ActivityState.Skipped;
-                return true;
-            }
-
             return calculationService.Validate(hydraulicBoundaryDatabaseFilePath,
                                                preprocessorDirectory,
                                                norm);
         }
 
         protected override void PerformCalculation()
         {
-            if (State != ActivityState.Skipped)
-            {
-                calculationService.Calculate(duneLocationCalculation,
-                                             norm,
-                                             hydraulicBoundaryDatabaseFilePath,
-                                             preprocessorDirectory);
-            }
+            calculationService.Calculate(duneLocationCalculation,
+                                         norm,
+                                         hydraulicBoundaryDatabaseFilePath,
+                                         preprocessorDirectory);
         }
 
         protected override void OnCancel()
@@ -100,13 +90,5 @@
         {
             duneLocationCalculation.NotifyObservers();
         }
-
-        private bool AlreadyCalculated
-        {
-            get
-            {
-                return duneLocationCalculation.Output != null;
-            }
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneLocationCalculationActivityTest.cs
===================================================================
diff -u -ra494bde768f1b989d31bff6a801a1816d6f9692e -rf49d4d7c45ecd482bd93b04bce65b6592004b0ce
--- Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneLocationCalculationActivityTest.cs	(.../DuneLocationCalculationActivityTest.cs)	(revision a494bde768f1b989d31bff6a801a1816d6f9692e)
+++ Ringtoets/DuneErosion/test/Ringtoets.DuneErosion.Service.Test/DuneLocationCalculationActivityTest.cs	(.../DuneLocationCalculationActivityTest.cs)	(revision f49d4d7c45ecd482bd93b04bce65b6592004b0ce)
@@ -215,27 +215,6 @@
         }
 
         [Test]
-        public void Run_OutputSet_ValidationAndCalculationNotPerformedAndStateSkipped()
-        {
-            // Setup
-            var duneLocationCalculation = new DuneLocationCalculation(new TestDuneLocation())
-            {
-                Output = new TestDuneLocationCalculationOutput()
-            };
-
-            var activity = new DuneLocationCalculationActivity(duneLocationCalculation,
-                                                               validFilePath,
-                                                               validPreprocessorDirectory,
-                                                               0.5);
-
-            // Call
-            activity.Run();
-
-            // Assert
-            Assert.AreEqual(ActivityState.Skipped, activity.State);
-        }
-
-        [Test]
         public void Run_ValidCalculationAndRun_SetsOutput()
         {
             // Setup
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationActivityTest.cs
===================================================================
diff -u -rbd3005f6e588e9dabb067acd8b61a3682c43970c -rf49d4d7c45ecd482bd93b04bce65b6592004b0ce
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationActivityTest.cs	(.../MacroStabilityInwardsCalculationActivityTest.cs)	(revision bd3005f6e588e9dabb067acd8b61a3682c43970c)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationActivityTest.cs	(.../MacroStabilityInwardsCalculationActivityTest.cs)	(revision f49d4d7c45ecd482bd93b04bce65b6592004b0ce)
@@ -57,7 +57,7 @@
         }
 
         [Test]
-        public void Run_InvalidMacroStabilityInwardsCalculationWithOutput_LogValidationStartAndEndWithErrors()
+        public void Run_InvalidMacroStabilityInwardsCalculation_LogValidationStartAndEndWithErrors()
         {
             // Setup
             MacroStabilityInwardsCalculationScenario invalidMacroStabilityInwardsCalculation = MacroStabilityInwardsCalculationScenarioTestFactory.CreateMacroStabilityInwardsCalculationScenarioWithInvalidInput();