I also don’t think you’d keep your double points from the original booking promo. A lot of people on our Dec 15th cruise form are saying that they were told wining a bid will result in a new booking and wipe out that promo. So your double balcony points will turn to single points moving up to suite. You may want to call yourself and ask?
I got an interesting offer yesterday. Royal up, our Jr for 2 Jr rooms... i guess if my husband and i get mad at each other, we could have seprate rooms. lol... min bid for that was like 100. We bid on the GS, OS and Royal Suite.