When the user presses "confirm sale", stock pickings and moves are automatically created, I would like to change them according to some criteria I have.

Currently, I am overriding the action_button_confirm, calling the super method, and then I delete the auto-generated stock pickings and moves, and recreate my own according to some special rules. I believe there must be a better way to do it. Here is my code:

    def action_button_confirm(self, cr, uid, ids, context=None):

        result = super(jamalon_delivery_distribution, self).action_button_confirm(cr, uid, ids, context=context)

        self._distribute(cr,uid,ids,context=context) # Here I delete the auto-generated moves and re-create them

How can I get my custom stock pickings and moves generated, without having to delete those automatically created?