Do the available J seats accurately reflect all of the "empty" business seats, assuming the number is less than 7? I have been watching 1 route for a bit and there are always additional unoccupied business seats above the available J number. I assume the difference are confirmed passengers who simply have not yet selected a seat. Hoping for an upgrade but the available J seat number is dwindling. Yet there are several additional seats available on the seat map. Just wondering If AA ever holds back J seats shown as available?