We were planing on doing a 7 night split stay this July. 3 nights at BCV studio followed by 4 nights in a Poly villa, both on rented points. After doing some Disney Math, we are flying a night earlier. If I were to book the 1st night with cash in a BCV studio, is there a way to link that reservation to my (rented) points reservation? They would both be a Deluxe Studio at BCV. DW really doesn't want to change rooms for only one night.