Index: Riskeer/Piping/src/Riskeer.Piping.Forms/Views/IPipingScenarioRow.cs
===================================================================
diff -u -rd36dca14d1c12ce3b1ee23d9604a748774e5d9c2 -rf836848fe5e019d68a219e3be865e66705eee6cd
--- Riskeer/Piping/src/Riskeer.Piping.Forms/Views/IPipingScenarioRow.cs	(.../IPipingScenarioRow.cs)	(revision d36dca14d1c12ce3b1ee23d9604a748774e5d9c2)
+++ Riskeer/Piping/src/Riskeer.Piping.Forms/Views/IPipingScenarioRow.cs	(.../IPipingScenarioRow.cs)	(revision f836848fe5e019d68a219e3be865e66705eee6cd)
@@ -35,7 +35,7 @@
         bool IsRelevant { get; }
         
         /// <summary>
-        /// Gets the contribution of <see cref="IPipingCalculationScenario{TPipingInput}"/>.
+        /// Gets the contribution of the <see cref="IPipingCalculationScenario{TPipingInput}"/>.
         /// </summary>
         RoundedDouble Contribution { get; }
         
Index: Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingScenariosView.cs
===================================================================
diff -u -r0da20a8ec5b382a649cf413a0de9c1e571e338a9 -rf836848fe5e019d68a219e3be865e66705eee6cd
--- Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingScenariosView.cs	(.../PipingScenariosView.cs)	(revision 0da20a8ec5b382a649cf413a0de9c1e571e338a9)
+++ Riskeer/Piping/src/Riskeer.Piping.Forms/Views/PipingScenariosView.cs	(.../PipingScenariosView.cs)	(revision f836848fe5e019d68a219e3be865e66705eee6cd)
@@ -110,9 +110,8 @@
             InitializeDataGridView();
 
             UpdateSectionsListBox();
-            UpdateDataGridViewDataSource();
 
-            UpdateTotalScenarioContributionLabel();
+            UpdateScenarioControls();
 
             UpdateVisibility();
         }
@@ -190,9 +189,10 @@
             };
 
             // The concat is needed to observe the input of calculations in child groups.
-            calculationInputObserver = new RecursiveObserver<CalculationGroup, PipingInput>(UpdateScenarioControls, pcg => pcg.Children.Concat<object>(
-                pcg.Children.OfType<IPipingCalculationScenario<PipingInput>>()
-                   .Select(c => c.InputParameters)))
+            calculationInputObserver = new RecursiveObserver<CalculationGroup, PipingInput>(
+                UpdateScenarioControls, pcg => pcg.Children.Concat<object>(pcg.Children
+                                                                              .OfType<IPipingCalculationScenario<PipingInput>>()
+                                                                              .Select(c => c.InputParameters)))
             {
                 Observable = calculationGroup
             };