Comment 8 for bug 659540

Hello about this we implement some changes in invoicing to accept in the best way the cancel process, adding a move_cancel_id in invoice and don't accept remove the move_id (in our country that is not accepted).
I let you our branch with this changes https://code.edge.launchpad.net/~ovnicraft/openobject-addons/cancel_process still in development process but show the concept clearly.

Best regards,