diff --git a/Operation.cpp b/Operation.cpp
index 775cac0..aa9fe76 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -1704,7 +1704,7 @@ Operation::AdjustStartEndMovements( bool bVerifyPreviousLink)
    while ( bOk  &&  nClPathId != GDB_ID_NULL) {
      // se richiesta verifica collegamento con lavorazione precedente, sistemo inizio
       if ( bVerifyPreviousLink) {
-         if ( ! AdjustOneStartMovement( nClPathId, nPrevClPathId, vAxVal, bMaxZ))
+         if ( ! AdjustOneStartMovement( nClPathId, nPrevClPathId, pPrevOp, vAxVal, bMaxZ))
             bOk = false ;
       }
       bMaxZ = false ;
@@ -1731,7 +1731,7 @@ Operation::AdjustStartEndMovements( bool bVerifyPreviousLink)
 
 //----------------------------------------------------------------------------
 bool
-Operation::AdjustOneStartMovement( int nClPathId, int nPrevClPathId, const DBLVECTOR& vAxPrev, bool bMaxZ)
+Operation::AdjustOneStartMovement( int nClPathId, int nPrevClPathId, Operation* pPrevOp, const DBLVECTOR& vAxPrev, bool bMaxZ)
 {
    if ( m_pMchMgr == nullptr  ||  m_pGeomDB == nullptr)
       return false ;
@@ -1798,8 +1798,16 @@ Operation::AdjustOneStartMovement( int nClPathId, int nPrevClPathId, const DBLVE
          }
         // risalita sopra fine percorso precedente
          DBLVECTOR vAxNew1 ;
-         if ( ! AddRise( vAxNew1, dSafeZ - vAxPrev[2], nPrevClPathId))
-            return false ;
+         if ( nPrevClPathId == GDB_ID_NULL) {
+            if ( pPrevOp == nullptr  ||  
+                 ! pPrevOp->RemoveRise()  ||
+                 ! pPrevOp->AddRise( vAxNew1, dSafeZ - vAxPrev[2]))
+               return false ;
+         }
+         else {
+            if ( ! AddRise( vAxNew1, dSafeZ - vAxPrev[2], nPrevClPathId))
+               return false ;
+         }
         // aggiungo posizione elevata prima dell'inizio del percorso corrente
          if ( m_pGeomDB->Copy( nEntId, GDB_ID_NULL, nEntId, GDB_AFTER) == GDB_ID_NULL)
             return false ;
diff --git a/Operation.h b/Operation.h
index ef35b3c..b088ab3 100644
--- a/Operation.h
+++ b/Operation.h
@@ -101,7 +101,7 @@ class Operation : public IUserObj
       bool   CalculateClPathAxesValues( int nClPathId, int nLinAxes, int nRotAxes, double dRot1W,
                                         double dAngDeltaMinForHome, const DBLVECTOR& vAxRotHome, DBLVECTOR& vAxRotPrec, int& nOutStrC) ;
       bool   AdjustStartEndMovements( bool bVerifyPreviousLink = true) ;
-      bool   AdjustOneStartMovement( int nClPathId, int nPrevClPathId, const DBLVECTOR& vAxPrev, bool bMaxZ) ;
+      bool   AdjustOneStartMovement( int nClPathId, int nPrevClPathId, Operation* pPrevOp, const DBLVECTOR& vAxPrev, bool bMaxZ) ;
       bool   ToolChangeNeeded( const Operation& Op1, const Operation& Op2) const ;
       bool   RemoveClimb( int nClPathId) ;
       bool   AddRise( DBLVECTOR& vAxVal, double dDelta = - 1, int nClPathId = GDB_ID_NULL) ;