It also depends what type of points were used. If you cancel more than 31 days in advance, points go back in to your account in the same manner they were used in the reservation...banked points will still be banked points, current UY points will still be current UY points (and bankable if still in your banking window) and borrowed points will still be borrowed points. Banked and borrowed points will need to be used by the end of your UY. If you cancel 30 days or less, then all points, regardless of the type, will become "holding points" and must be used by the end of the UY the trip is in, and can only be used for bookings made 60 days or less from check in.