diff --git a/LuaLibs/BeamExec.lua b/LuaLibs/BeamExec.lua
index 06d1895..5356408 100644
--- a/LuaLibs/BeamExec.lua
+++ b/LuaLibs/BeamExec.lua
@@ -1080,7 +1080,7 @@ local function OrderFeatures( vProc)
 end
 
 -------------------------------------------------------------------------------------------------------------
-local function AddFeatureResultToGlobalList( Proc, OptionalParameters)
+local function AddFeatureResultToGlobalList( Part, Proc, OptionalParameters)
    local sStrategyId
    local sStatus
    local dCompletionIndex
@@ -1099,13 +1099,14 @@ local function AddFeatureResultToGlobalList( Proc, OptionalParameters)
       if Proc.isVirtualProc then
          return
       end
-      local ChosenStrategyTable = PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation][Proc.nIndexMasterProc].ChosenStrategy
+      local nOffsetIndex = EgtIf( Part.bPartInCombiIsInverted, 4, 0)
+      local ChosenStrategyTable = PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation+nOffsetIndex][Proc.nIndexMasterProc].ChosenStrategy
       if ChosenStrategyTable then
          sStrategyId = ChosenStrategyTable.sStrategyId
          sStatus = ChosenStrategyTable.Result.sStatus
          dCompletionIndex = ChosenStrategyTable.Result.dCompletionIndex
          dCompositeRating = ChosenStrategyTable.Result.dCompositeRating
-         local idFeature  = PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation][Proc.nIndexMasterProc].idFeature
+         local idFeature  = PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation+nOffsetIndex][Proc.nIndexMasterProc].idFeature
          sApplyInfo = 'Skipped. Feature machined: ' .. EgtNumToString( idFeature)
       end
    elseif Proc.ChosenStrategy then
@@ -1194,15 +1195,16 @@ local function CalculateMachinings( vProc, Part, nInitialRotation)
             _, _ = StrategyScript.Make( true, Proc, Part, Proc.ChosenStrategy)
          -- se tutte le strategie disponibili non sono applicabili
          else
+            local nOffsetIndex = EgtIf( Part.bPartInCombiIsInverted, 4, 0)
             -- se non esiste una strategia scelta (non dovrebbe mai succedere) cancello da lista generale
-            PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation][Proc.nIndexInVProc].ChosenStrategy = nil
+            PROCESSINGS[Proc.nIndexPartInParts].Rotation[Proc.nIndexRotation+nOffsetIndex][Proc.nIndexInVProc].ChosenStrategy = nil
             
             -- TODO dare messaggio che la feature non è stata eseguita nonostante la presenza di strategie disponibili
             
          end
       end
       -- scrivo risultato in tabella globale
-      AddFeatureResultToGlobalList( Proc, { nRotation = nCurrRotation})
+      AddFeatureResultToGlobalList( Part, Proc, { nRotation = nCurrRotation})
    end
 
    -- ripristino pezzo in posizione originale
@@ -1693,7 +1695,7 @@ function BeamExec.ProcessMachinings( PARTS)
             MACHININGS.Info.nSplitCutRotation = 1
             -- anche se non ci sono feature da eseguire, bisogna comunque scrivrere i risultati
             for nProc = 1, #vProc do
-               AddFeatureResultToGlobalList( vProc[nProc])
+               AddFeatureResultToGlobalList( PARTS[nPart], vProc[nProc])
             end
          -- altrimenti si fanno tutti i calcoli
          else
diff --git a/LuaLibs/MachiningLib.lua b/LuaLibs/MachiningLib.lua
index 8585232..6aaf8c6 100644
--- a/LuaLibs/MachiningLib.lua
+++ b/LuaLibs/MachiningLib.lua
@@ -1366,7 +1366,8 @@ function MachiningLib.AddOperations( MACHININGS, Part, sRotation)
                   bAreAllMachiningApplyOk = false
                   nErr, sErr = EgtGetLastMachMgrError()
                   EgtSetOperationMode( nOperationId, false)
-                  local CurrProc = PROCESSINGS[MACHININGS[i].Proc.nIndexPartInParts].Rotation[MACHININGS[i].Proc.nIndexRotation][MACHININGS[i].Proc.nIndexInVProc]
+                  local nOffsetIndex = EgtIf( Part.bPartInCombiIsInverted, 4, 0)
+                  local CurrProc = PROCESSINGS[MACHININGS[i].Proc.nIndexPartInParts].Rotation[MACHININGS[i].Proc.nIndexRotation+nOffsetIndex][MACHININGS[i].Proc.nIndexInVProc]
                   -- si annulla la feature scelta, in modo che un successivo ricalcolo non la tenga in considerazione
                   CurrProc.AvailableStrategies[CurrProc.nIndexBestStrategy].Result.sStatus = 'Not-Applicable'
                   CurrProc.AvailableStrategies[CurrProc.nIndexBestStrategy].Result.sInfo = 'REJECTED (' .. sErr .. ')'