When we bought at BLT in June, our guide was able to get us a split stay for early December (AKV Savannah view and BLT Lake view room). We had asked for the split stay, but were hoping for BLT MK view as the second part of the stay.
From what we've read on the boards, it sounds like BLT was fully booked for
DVC. Guessing our guide did exactly as Deb & Bill described and our reservation is part of the developer points from both BLT and AKV since they are still selling at both resorts.