diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 93bcbd653..6a77183c7 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -1097,7 +1097,20 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
 
                     tableRowAnswers.ForEach(x =>
                     {
-                        x.SplitOrMergeType = x.SplitOrMergeType==SplitOrMergeType.Merge|| x.SplitOrMergeType == SplitOrMergeType.Merged? SplitOrMergeType.Merged : null;
+
+                        switch (x.SplitOrMergeType)
+                        {
+                            case SplitOrMergeType.Merge:
+							case SplitOrMergeType.Merged:
+                                x.SplitOrMergeType = SplitOrMergeType.Merged;
+                                break;
+							case SplitOrMergeType.MergeMain:
+								x.SplitOrMergeType = SplitOrMergeType.MergeMain;
+								break;
+                            default:
+                                x.SplitOrMergeType = null;
+                                break;
+						}
                         x.VisitTaskId = visitTaskId;
                         x.IsCurrentTaskAdd = false;
                         x.Id = NewId.NextGuid();