After an hour talking to a grossly incompetent support tech I’ve found through his manager and several forum posts that moving my BF4 install (even with the normally safe method) will brick China Rising.
I was moving some things in prep for the a new SSD and after playing China Rising for about an hour today, was unable to play those maps because Battlelog said I didn’t have it installed, I also started getting getting the “black screen” crash that looks like I’ve been kicked when I joined normal maps to test the game.
The black screen was another symptom. Happened on multiple server, I could not play for more than 15 seconds before it would happen again.
Just fair warning.