diff --git a/LuaLibs/BeamExec.lua b/LuaLibs/BeamExec.lua
index 0b7effa..ee9123e 100644
--- a/LuaLibs/BeamExec.lua
+++ b/LuaLibs/BeamExec.lua
@@ -808,12 +808,19 @@ local function GetFeatureInfoAndDependency( vProcSingleRot, Part)
    -- gruppo per geometrie temporanee
    local idTempGroup = BeamLib.GetTempGroup()
 
-   local HeadProc = {}
-   local TailProc = {}
+   local HeadProcOriginal
+   local TailProcOriginal
+   local HeadProc
+   local TailProc
 
    -- ciclo tutte le feature
    for i = 1, #vProcSingleRot do
       local Proc = vProcSingleRot[i]
+      if Proc.Topology.sName == 'HeadCut' then
+         HeadProcOriginal = Proc
+      elseif Proc.Topology.sName == 'TailCut' then
+         TailProcOriginal = Proc
+      end
       -- se feature abilitata alla lavorazione
       if Proc.nFlg ~= 0 then
          -- controllo la feature con tutte le altre per recuperare le dipendenze
@@ -939,6 +946,12 @@ local function GetFeatureInfoAndDependency( vProcSingleRot, Part)
       end
    end
 
+   if not HeadProc then
+      HeadProc = HeadProcOriginal
+   end
+   if not TailProc then
+      TailProc = TailProcOriginal
+   end
    HeadProc.Topology = {}
    TailProc.Topology = {}
    HeadProc.Topology.sFamily = 'HeadCut'