diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 3d9a0da..be87aa9 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -117,8 +117,8 @@ function MachiningLib.GetSplitMachinings( Machinings, SplittingPoints, Part )
          dEdgeMaxX = Machinings[i].ptEdge2:getX()
          dEdgeMinX = Machinings[i].ptEdge1:getX()
       end
-      local dOriginalStartAddLength = Machinings[i].LeadIn.dStartAddLength
-      local dOriginalEndAddLength = Machinings[i].LeadOut.dEndAddLength
+      local OriginalLeadIn = Machinings[i].LeadIn
+      local OriginalLeadOut = Machinings[i].LeadOut
       local sOriginalStage = Machinings[i].sStage
       local LeadInForSplit = Machinings[i].LeadInForSplit
       local LeadOutForSplit = Machinings[i].LeadOutForSplit
@@ -136,37 +136,42 @@ function MachiningLib.GetSplitMachinings( Machinings, SplittingPoints, Part )
                if j > 1 then
                   nCurrentMachiningIndex = nCurrentMachiningIndex + 1
                   table.insert( Machinings, nCurrentMachiningIndex, BeamLib.TableCopyDeep( Machinings[i]))
+                  Machinings[nCurrentMachiningIndex].LeadIn = BeamLib.TableCopyDeep( OriginalLeadIn)
+                  Machinings[nCurrentMachiningIndex].LeadOut = BeamLib.TableCopyDeep( OriginalLeadOut)
                end
-               local dStartAddLength = dOriginalStartAddLength
-               local dEndAddLength = dOriginalEndAddLength
+               local dStartAddLength = OriginalLeadIn.dStartAddLength
+               local dEndAddLength = OriginalLeadOut.dEndAddLength
                if MachiningLib.StartsLeftSide( Machinings[i]) then
                   dStartAddLength, dEndAddLength = dEndAddLength, dStartAddLength
                end
                if j == 1 then
                   dEndAddLength = - ( SplittingPoints[j]:getX() - dEdgeMinX) + BeamData.MILL_OVERLAP
                   if LeadOutForSplit then
-                     Machinings[nCurrentMachiningIndex].LeadOut = LeadOutForSplit
+                     Machinings[nCurrentMachiningIndex].LeadOut = BeamLib.TableCopyDeep( LeadOutForSplit)
                   end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( SplittingPoints[j]:getX() + ( dEdgeMaxX - SplittingPoints[j]:getX()) / 2, 0, 0)
                elseif j == nParts then
                   dStartAddLength = - ( dEdgeMaxX - SplittingPoints[j - 1]:getX()) + BeamData.MILL_OVERLAP
                   if LeadInForSplit then
-                     Machinings[nCurrentMachiningIndex].LeadIn = LeadInForSplit
+                     Machinings[nCurrentMachiningIndex].LeadIn = BeamLib.TableCopyDeep( LeadInForSplit)
                   end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( dEdgeMinX + ( SplittingPoints[j - 1]:getX() - dEdgeMinX) / 2, 0, 0)
                else
                   dStartAddLength = - ( dEdgeMaxX - SplittingPoints[j - 1]:getX()) + BeamData.MILL_OVERLAP
                   dEndAddLength = - ( SplittingPoints[j]:getX() - dEdgeMinX) + BeamData.MILL_OVERLAP
                   if LeadInForSplit then
-                     Machinings[nCurrentMachiningIndex].LeadIn = LeadInForSplit
+                     Machinings[nCurrentMachiningIndex].LeadIn = BeamLib.TableCopyDeep( LeadInForSplit)
                   end
                   if LeadOutForSplit then
-                     Machinings[nCurrentMachiningIndex].LeadOut = LeadOutForSplit
+                     Machinings[nCurrentMachiningIndex].LeadOut = BeamLib.TableCopyDeep( LeadOutForSplit)
                   end
                   Machinings[nCurrentMachiningIndex].ptCenter = Point3d( SplittingPoints[j]:getX() + ( SplittingPoints[j - 1]:getX() - SplittingPoints[j]:getX()) / 2, 0, 0)
                end
                if MachiningLib.StartsLeftSide( Machinings[nCurrentMachiningIndex]) then
                   dStartAddLength, dEndAddLength = dEndAddLength, dStartAddLength
+                  local LeadInCopy = BeamLib.TableCopyDeep( Machinings[nCurrentMachiningIndex].LeadIn)
+                  Machinings[nCurrentMachiningIndex].LeadIn = BeamLib.TableCopyDeep( Machinings[nCurrentMachiningIndex].LeadOut)
+                  Machinings[nCurrentMachiningIndex].LeadOut = BeamLib.TableCopyDeep( LeadInCopy)
                end
 
                Machinings[nCurrentMachiningIndex].LeadIn.dStartAddLength = dStartAddLength
diff --git a/Strategies/Standard/STR0009/STR0009.lua b/Strategies/Standard/STR0009/STR0009.lua
index 581bba0..233ef20 100644
--- a/Strategies/Standard/STR0009/STR0009.lua
+++ b/Strategies/Standard/STR0009/STR0009.lua
@@ -58,7 +58,7 @@ local function GetArcStrategy( Proc, Part)
    -- se lavorazione orizzontale
    if bIsHorizontal then
       local bDouble
-      local Milling = {}
+      local Milling = MachiningLib.InitMachiningParameters( MCH_MY.MILLING)
       Milling.bIsApplicable = false
       ToolSearchParameters = {}
       ToolSearchParameters.sMillShape = 'STANDARD'
@@ -204,8 +204,8 @@ function STR0009.Make( bAddMachining, Proc, Part, CustomParameters)
          end
 
          -- preparo attacco/uscita in caso di spezzatura arco
-         Strategy.Machinings[i].LeadInForSplit = {}
-         Strategy.Machinings[i].LeadOutForSplit = {}
+         Strategy.Machinings[i].LeadInForSplit = BeamLib.TableCopyDeep( Strategy.Machinings[i].LeadIn)
+         Strategy.Machinings[i].LeadOutForSplit = BeamLib.TableCopyDeep( Strategy.Machinings[i].LeadOut)
          Strategy.Machinings[i].LeadInForSplit.nType = MCH_MILL_LI.LINEAR
          Strategy.Machinings[i].LeadOutForSplit.nType = MCH_MILL_LI.LINEAR
          Strategy.Machinings[i].LeadInForSplit.dTangentDistance = 0