Xbox One Digital Issue: if you pre-loaded before Day One patch went live, your game may need to re-download
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