Just to clarify: You rented a reservation from a BLT owner for 11/2-11/5 and now you're hoping to change that reservation at 7 months to BCV 11/5-11/6 (or 11/7)?
If that's the case, I think that the bigger question would be whether the owner would be willing to attempt to change the reservation. Changing a
DVC reservation is not like rebooking a Disney Resort reservation. The owner would most likely need to cancel your existing reservation in an attempt to book your new reservation. If availability for the BCV villa disappears during that attempt, you could end up with no reservation at all!