Lots of users are reporting that on Xbox One, digitally, if you pre-loaded Advanced Warfare before the 256MB Day One patch went out, then the game may start re-installing all 46GB again upon unlock at midnight.

As a user on Reddit pointed out, if once the game unlocks, and your percentage is at 99%, you should be good to go as it’s just downloading a 256MB update; however if it is 0% and taking a while…it may be re-downloading it all again. There’s currently no way around this as of now.

SOURCE: Reddit