ok, back on topic ..

tested move on Win7 x64 with a source folder with subdirs and files init..

 Code:
break on
move @scriptdir + "\MoveSource\" @scriptdir + "\MoveTarget\" 
"RC was: [" + @error + "] - " + @serror
get $


worked as expected -> [0] - the command completed successfully.
Checked FileSystem and found "MoveSource" with its complete content below "MoveTarget\"

Anything I miss here?!

RD results in a moment..
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