Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs
===================================================================
diff -u -r1604f9968c87181d6e94d89b287fc8dd5a85854b -r66f5a4ce15c1de857ae5a5dc8c90e8cf4f3eafae
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs	(.../AssessmentSectionMergeHandler.cs)	(revision 1604f9968c87181d6e94d89b287fc8dd5a85854b)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Merge/AssessmentSectionMergeHandler.cs	(.../AssessmentSectionMergeHandler.cs)	(revision 66f5a4ce15c1de857ae5a5dc8c90e8cf4f3eafae)
@@ -32,6 +32,7 @@
 using Ringtoets.Common.Data.Hydraulics;
 using Ringtoets.Common.Data.Structures;
 using Ringtoets.GrassCoverErosionInwards.Data;
+using Ringtoets.GrassCoverErosionOutwards.Data;
 using Ringtoets.HeightStructures.Data;
 using Ringtoets.HydraRing.Calculation.Data.Input.WaveConditions;
 using Ringtoets.Integration.Data;
@@ -237,6 +238,13 @@
                     continue;
                 }
 
+                if (TryMergeFailureMechanism<GrassCoverErosionOutwardsFailureMechanism>(
+                    targetAssessmentSection, failureMechanism,
+                    (section, mechanism) => section.GrassCoverErosionOutwards = mechanism))
+                {
+                    continue;
+                }
+
                 if (TryMergeFailureMechanism<GrassCoverSlipOffOutwardsFailureMechanism>(
                     targetAssessmentSection, failureMechanism,
                     (section, mechanism) => section.GrassCoverSlipOffOutwards = mechanism))