I'm not going until September and we were at the WL in September 2023. The room I wanted was a Copper Creek villa, and that inventory (because it is DVC) was not available to book for cash until October (which was past the 7 day BB booking window). I booked a GF room and then when I called in October, the CCV room was available, so I changed it. The thing is, even if the room shows at rack rate, it might not be available for the BB rate. I would think they would change the room up until almost arrival if something is available. They might cancel the first reservation and refund the money then charge you again for the new room because I'm not sure if they can transfer the deposit. I'd keep trying, the worst that can happen is they don't have the availability. If you are going President's week, it could be challenging. It's vacation week for all the schools here in the Northeast and everyone goes to Disney! Hope it works out for you.