The below post has been edited for clarity regarding the nature of the fixed bug and whether or not to troubleshoot. Later replies in this thread may reference an earlier version of this post.
Hey folks,
We did a patch which should have fixed the campaign progress bug a bit ago, but in so doing some changes to maps were implemented as well which invalidated saves. This should be the last time this occurs unless another bug comes up. What this means is that if you have this happen after Feb 8, 2020, you probably should troubleshoot the issue using the steps below. Otherwise, it was just a bug that has since been fixed so there is no point in you attempting to troubleshoot it.
If you are still having problems with your campaign progress saving after all this, most likely you are having a permission error of some type. Please try uninstalling security programs, ensure that your operating system is completely up to date, and if all else fails, create a new administrator account. Most players who we see having this issue still are not having their saves file created correctly due to permission problems.