I have had messages in the cloud enabled since it was available, and when I got my new phone on Friday, it began trying to sync the messages. I still have huge gaps of missing messages that weren't downloaded (and still aren't). I can clearly see them on my old phone, but some of them are not appearing on the new phone. It seems to be random; some are missing a two-week chunk, some more, some less. How can I force a re-sync of the messages? I researched this before when people were having these issues with iCloud messages, but no one seemed to have a solution at the time.