diff --git a/EXE.h b/EXE.h
index fa1b90b..6e5f909 100644
--- a/EXE.h
+++ b/EXE.h
@@ -32,5 +32,9 @@ ILogger* GetCmdLogger( void) ;
 bool SetCmdLog( bool bVal) ;
 bool IsCmdLog( void) ;
 
+//----------------------------------------------------------------------------
+bool ExeInsertMachMgr( int nInsGrp) ;
+
 //----------------------------------------------------------------------------
 bool ExeIsDuploBase( IGeomDB* pGeomDB, int nId) ;
+bool ExeInsertDuplo( int nInsGrp) ;
diff --git a/EXE_GdbPartLayers.cpp b/EXE_GdbPartLayers.cpp
index 1b730cb..90e1337 100644
--- a/EXE_GdbPartLayers.cpp
+++ b/EXE_GdbPartLayers.cpp
@@ -816,3 +816,35 @@ ExeDuploGetOriginal( int nDupId)
    pGeomDB->GetInfo( nDupId, GDB_SI_DUPSOU, nOrigId) ;
    return nOrigId ;
 }
+
+//-----------------------------------------------------------------------------
+bool
+ExeInsertDuplo( int nInsGrp)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, false)
+  // Cerco il gruppo dei duplicati sotto il gruppo di inserimento
+   int nInsDplId = pGeomDB->GetFirstNameInGroup( nInsGrp, DUPLO_BASE) ;
+   if ( nInsDplId == GDB_ID_NULL)
+      return true ;
+  // Recupero il gruppo base dei duplicati
+   int nDuploBaseId = GetDuploBase( pGeomDB, true) ;
+   if ( nDuploBaseId == GDB_ID_NULL)
+      return false ;
+  // Sistemo i duplicati
+   int nId = pGeomDB->GetFirstInGroup( nInsDplId) ;
+   while ( nId != GDB_ID_NULL) {
+      int nNextId = pGeomDB->GetNext( nId) ;
+      int nSouId ;
+      if ( pGeomDB->GetInfo( nId, GDB_SI_DUPSOU, nSouId)  &&  ExeIsPart( nSouId)) {
+         pGeomDB->Relocate( nId, nDuploBaseId) ;
+      }
+      else
+         pGeomDB->Erase( nId) ;
+      nId = nNextId ;
+   }
+  // Rimuovo il gruppo dei duplicati di inserimento
+   pGeomDB->Erase( nInsDplId) ;
+
+   return true ;
+}
diff --git a/EXE_GeomDB.cpp b/EXE_GeomDB.cpp
index 3470037..9b23606 100644
--- a/EXE_GeomDB.cpp
+++ b/EXE_GeomDB.cpp
@@ -349,6 +349,8 @@ ExeInsertFile( const string& sFilePath)
    IMachMgr* pMchMgr = GetCurrMachMgr() ;
    if ( pMchMgr != nullptr)
       bOk = bOk && ExeInsertMachMgr( nGrp) ;
+  // sistemo eventuali pezzi duplicati
+   bOk = bOk && ExeInsertDuplo( nGrp) ;
   // sposto i gruppi rimasti sotto la radice
    nId = pGeomDB->GetFirstGroupInGroup( nGrp) ;
    while ( bOk  &&  nId != GDB_ID_NULL) {