If a customer exchanges one item for another and they are different
prices, currently it is done in two separate transaction. A Credit and
then a Sale. It would be awesome if while in the Sale screen I could
enter a negative quantity for the return item and then sale them the
correct item all in one transaction. The Sale total would reflect the
difference whether it be a negative or a positive amount. And the
negative quantity item would be added back to inventory.
Thank you for reaching out. This have been added as of 2.15.18. That version has not yet been publicly released, but will be available within a couple weeks.
Thank you for your patience. - James