diff --git a/EXE_GeomDB.cpp b/EXE_GeomDB.cpp
index 9b23606..5057fc1 100644
--- a/EXE_GeomDB.cpp
+++ b/EXE_GeomDB.cpp
@@ -514,8 +514,13 @@ ExeSaveMachGroupToFile( int nMGroupId, const string& sFilePath, int nFlag)
       while ( nRawId != GDB_ID_NULL) {
          int nPartId = pMachMgr->GetFirstPartInRawPart( nRawId) ;
          while ( nPartId != GDB_ID_NULL) {
-            if ( find( vId.begin(), vId.end(), nPartId) == vId.end())
+            if ( find( vId.begin(), vId.end(), nPartId) == vId.end()) {
                vId.emplace_back( nPartId) ;
+              // potrebbe essere un duplicato, recupero eventuale originale 
+               int nOrigId = GDB_ID_NULL ; pGeomDB->GetInfo( nPartId, GDB_SI_DUPSOU, nOrigId) ;
+               if ( ExeIsPart( nOrigId)  &&  find( vId.begin(), vId.end(), nOrigId) == vId.end())
+                  vId.emplace_back( nOrigId) ;
+            }
             nPartId = pMachMgr->GetNextPartInRawPart( nPartId) ;
          }
          nRawId = pMachMgr->GetNextRawPart( nRawId) ;
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 1b2f3ce..b486e56 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ