Charles was stating it is not possible to combine points from different Home Resorts at 11 months. Are you suggesting that MS has allowed you to combine points from different resorts prior to 7 months?
At 7 months it is easy to combine points from different memberships without regard to Home Resort status by reserving some nights of the stay from one membership, the remaining nights from another membership and having MS link them together.
At 11 months, only Home Resort points could be used to make a reservation. If you have multiple memberships with the same Home Resort, MS will assist making a reservation at 11 months by combining points from those multiple memberships.