Was playing around (fun stuff )
Had to reinstall LMDE-Xfce to before UPack 5!
Noticed a new (in default install UP5) now has alacarte (menu editor)
Changed to Standard (default) menu instead of the 'custom XDG one', and did some tests seems to work properly (on default menu) now.
Can now Build a exact (I think) copy of the Mint XDG one now .
Thank You (clem or whoever)