It seems that this is part of the patching process seeing it happens almost every time. It’s probabaly best to periodically back up campaign progress to be safe:
With the recent patches seemingly resetting all campaign progress, and several reports of progress being lost after a game crash, it might be helpful to periodically back up the files that store the campaign information. Doing so can help soften the blow if/when progress is reset.
There are a couple ways it can be done: one simpler, one more involved. Everything here is assuming Windows. Macs will need to navigate to the analogous file locations.
NOTE: This does not pertain to the loss of…