RezOvation Desktop gives you the option to "Apply a reservation to a Previous Invoice." If a guest makes a reservation for one night and decides to add a second night with a package, Desktop gives you the ability to add the second night and make it any discount or package the guest desires and adds it to the previous invoice without changing the price on the original invoice. This makes their multiple night stay with multiple price points on the same invoice/reservation. Is it possible to make this an option in RezOvation GT?