We have had similar things happen in a series of B2B cruises. For example, we might not be able to get the cabin location we want for the first cruise, so we take the best available, and book the location we do want on subsequent cruises. Even if we have to move, the moves are simple and close. Then Princess, noticing that we are on B2B cruises, and despite having the reservations marked no upgrade, will move us into the first cabin for the second cruise, and so on. We have not always been successful in getting the original cabin back.