diff --git a/CAMAuto/ManProcOneMachGroup.lua b/CAMAuto/ManProcOneMachGroup.lua
index 970858e..9a3ce9b 100644
--- a/CAMAuto/ManProcOneMachGroup.lua
+++ b/CAMAuto/ManProcOneMachGroup.lua
@@ -8,12 +8,38 @@ EgtEnableDebug( false)
 
 
 -- scelta della macchinata da aprire
-local sOpenDirPath = 'C:\\EgtData\\EgtWindowMaker\\Projects\\*.bwe'
-sOpenFilePath = EgtFileDialog( true, sOpenDirPath, "Window Project Files (*.bwe)|*.bwe||") 
+local sOpenDirPath = EgtGetStringFromIni( 'Window', 'LastJwdDir', 'C:\\EgtData\\EgtWindowMaker\\Projects', EgtGetIniFile()) 
+if EgtEndsWith( sOpenDirPath, '\\') then
+   sOpenDirPath = sOpenDirPath .. '*.bwe'
+else
+   sOpenDirPath = sOpenDirPath .. '\\*.bwe'
+end
+sOpenFilePath = EgtFileDialog( true, sOpenDirPath, "Window MachGroup Files (*.bwe)|*.bwe||") 
 if not sOpenFilePath then
    return
 end
+local sDir = EgtSplitPath( sOpenFilePath)
+EgtWriteStringToIni( 'Window', 'LastJwdDir', sDir, EgtGetIniFile())
 
+-- eventuale copia dell'originale
+local sOrigFile = EgtChangePathExtension( sOpenFilePath, '.omgr')
+if not EgtExistsFile( sOrigFile) then
+   EgtCopyFile( sOpenFilePath, sOrigFile)
+end
+
+-- cancello eventuali vecchi file con lo stesso nome
+local vFiles = EgtFindAllFiles( EgtChangePathExtension( sOpenFilePath, '*'))
+for i = 1, #vFiles do
+   local sFileToErase = sDir .. vFiles[i] 
+   if string.upper( sFileToErase) ~= string.upper( sOrigFile) then
+      EgtEraseFile( sFileToErase)
+   end
+end
+
+-- copio l'originale come nuovo file di partenza
+EgtCopyFile( sOrigFile, sOpenFilePath)
+
+-- lancio
 local _, sBaseDir = EgtEndsWith( EgtGetSourceDir(), '\\')
 
 _G.WIN = { BASEDIR = sBaseDir,