Yes, they will usually allow that for reservations made using Home Resort points. If you have multiple resorts, it might not be allowed if you are trying to use banked points from another resort.
In this case, why not bank the 2006 points and use those for the reservation in your 07 Use Year. If you later decide to make a reservation within your 06UY, you can still borrow from the 07 points for that trip.
Either way should be OK.
Enjoy!