Ok, so I finally figured out how the Vistana reservations get added to our Bonvoy accounts. I called Marriott again today and was told that the exchanges may not be added. The person also said that we would not receive any nights, which I know is incorrect. I decided to call Vistana resort. The rep looked up my name and date of travel. She found the reservation and gave me the new reservation number. I was also able to request a certain section because my last stay there in July was not good. The amenities were great, but our unit in Palms was horrible. I don't mind staying at the Vistana as long as I'm not in the same area where we stayed previously. By the time I hung up the phone, the reservation showed up in my Bonvoy account.