I have a trip in July, and I'm looking to hit up a few different resorts because I have addonitis. My home resorts are Bay Lake Tower and Animal Kingdom Lodge, with the BLT points being pre-riviera block and the animal kingdom bought resale last year. I have an existing reservation I made at BLT within the 11 month window, and I have some time at AKL, but am looking to book Rivera. I'm now noticing I don't have enough points within BLT to book the time I want at Riviera. Since its now past the 7 month window, can I modify my existing BLT reservation to use the AKL points instead since I should be able to book BLT with those points now? When I go to modify the reservation, the BLT points are locked. Is my only option to cancel and start over, with a risk I could lose it?