[UnderRatedCoast]

I've had this happen in a dynasty for a couple of reasons.

1) When the commish advances, someone starts loading the dynasty before all of the info is done being updated. In one case all of the recruits who were scheduled to visit gave the visit an F rating, and two players who had me out in front in interest by a huge margin committed elsewhere.
2) We had to restart the dynasty with someone else as a commish, and someone forgot to retire from the other dynasty before we advanced, so it glitched and everyone with 0 hours in the other dynasty got 0 in this dynasty.
3) It could be a problem that we faced in the regular season where the commish advances, but everyone looks like they have to replay the week before. In this case, a fix is to exit the online dynasty, got to your xbox dashboard, go to the memory section and delete the online dynsaty file from your xbox. Then get back on and reload the dynasty file, and it should go to where it's supposed to be.