diff --git a/source/framework/core/src/TRestDataSet.cxx b/source/framework/core/src/TRestDataSet.cxx
index 3ac437e2d..3b3da25bf 100644
--- a/source/framework/core/src/TRestDataSet.cxx
+++ b/source/framework/core/src/TRestDataSet.cxx
@@ -912,20 +912,12 @@ Bool_t TRestDataSet::Merge(const TRestDataSet& dS) {
         }
     }
 
-    if (REST_StringHelper::StringToTimeStamp(fFilterStartTime) >
-        REST_StringHelper::StringToTimeStamp(dS.GetFilterStartTime()))
-        fFilterStartTime = dS.GetFilterStartTime();
-    if (REST_StringHelper::StringToTimeStamp(fFilterEndTime) <
-        REST_StringHelper::StringToTimeStamp(dS.GetFilterEndTime()))
-        fFilterEndTime = dS.GetFilterEndTime();
     if (fStartTime > dS.GetStartTime()) fStartTime = dS.GetStartTime();
     if (fEndTime < dS.GetEndTime()) fEndTime = dS.GetEndTime();
 
     auto fileSelection = dS.GetFileSelection();
     fFileSelection.insert(fFileSelection.end(), fileSelection.begin(), fileSelection.end());
 
-    fProcessObservablesList = dS.GetProcessObservablesList();
-
     fTotalDuration += dS.GetTotalTimeInSeconds();
 
     return true;