If the user wants to remove a move shipment out, he can
- delete the corresponding move from the inventory moves before assigning them
- assign the shipment, nothing changed on outgoing moves
- delete the outgoing move before packing
If the user don't delete the outgoing move separately it will be set to quantity 0, but still appears on delivery note
We have a patch, that deletes the outgoing move on packing, if there is no inventory move for same product. That'S more intuitive for the user delete the product move only once.