diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index ca2995d..a74eb38 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/GeomDB.cpp b/GeomDB.cpp
index 68094f1..cc36d75 100644
--- a/GeomDB.cpp
+++ b/GeomDB.cpp
@@ -1209,8 +1209,7 @@ GeomDB::Erase( int nId)
       return false ;
 
   // recupero l'oggetto
-   GdbObj* pGdbObj ;
-   pGdbObj = m_IdManager.FindObj( nId) ;
+   GdbObj* pGdbObj = m_IdManager.FindObj( nId) ;
    if ( pGdbObj == nullptr)
       return false ;
 
@@ -1234,6 +1233,27 @@ GeomDB::Erase( GdbObj* pGdbObj)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+IGeoObj*
+GeomDB::RemoveGeoObjAndErase( int nId)
+{
+  // non si può cancellare il gruppo radice (escludo anche Id non validi)
+   if ( nId <= GDB_ID_ROOT)
+      return nullptr ;
+  // recupero l'oggetto geometrico
+   GdbGeo* pGdbGeo = ::GetGdbGeo( m_IdManager.FindObj( nId)) ;
+   if ( pGdbGeo == nullptr)
+      return nullptr ;
+   IGeoObj* pGeoObj = pGdbGeo->m_pGeoObj ;
+  // annullo il riferimento alla geometria nell'entità
+   pGdbGeo->m_pGeoObj = nullptr ;
+  // tolgo dalla lista e disalloco
+   pGdbGeo->Remove() ;
+   delete pGdbGeo ;
+
+   return pGeoObj ;
+}
+
 //----------------------------------------------------------------------------
 bool
 GeomDB::EmptyGroup( int nId)
diff --git a/GeomDB.h b/GeomDB.h
index 03e6596..b3b94c9 100644
--- a/GeomDB.h
+++ b/GeomDB.h
@@ -81,8 +81,9 @@ class GeomDB : public IGeomDB
       virtual int  GetNewId( void) const ;
       virtual bool ChangeId( int nId, int nNewId) ;
       virtual bool Erase( int nId) ;
+      virtual IGeoObj* RemoveGeoObjAndErase( int nId) ;
       virtual bool EmptyGroup( int nId) ;
-     // transformations
+     // Transformations
       virtual bool Translate( int nId, const Vector3d& vtMove) ;
       virtual bool TranslateGlob( int nId, const Vector3d& vtMove) ;
       virtual bool TranslateGroup( int nId, const Vector3d& vtMove) ;
diff --git a/SfrCreate.cpp b/SfrCreate.cpp
index 9bcdf49..a2a3a95 100644
--- a/SfrCreate.cpp
+++ b/SfrCreate.cpp
@@ -238,10 +238,23 @@ SurfFlatRegionByContours::GetSurf( void)
 bool
 SurfFlatRegionByContours::AllCurvesUsed( void)
 {
-  // verifico se cono rimaste delle curve
+  // verifico se sono rimaste delle curve
    for ( auto& pCrv : m_vpCrv) {
       if ( pCrv != nullptr)
-         return true ;
+         return false ;
    }
-   return false ;
+   return true ;
+}
+
+//-------------------------------------------------------------------------------
+bool
+SurfFlatRegionByContours::GetUnusedCurveTempProps( INTVECTOR& vId)
+{
+   vId.clear() ;
+  // verifico se sono rimaste delle curve
+   for ( auto& pCrv : m_vpCrv) {
+      if ( pCrv != nullptr)
+         vId.push_back( pCrv->GetTempProp()) ;
+   }
+   return ( ! vId.empty()) ;
 }
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