When I update, I lose tags or groups

Help
1

Several times over the last few years, when I installed an update I lose some work.
Once, I lost ALL the tags on my files :face_with_symbols_on_mouth:.
But in the previous update to the last, I lost a Tag Group with dozens of tags in the group.
The tags still appear on the files (thank goodness), but the group is AWOL.
When I right click on a tagged file, it does give the option to Add Tag to Group and it lists that missing Group, but the group doesn’t show on the Tag Library page.

2

Are you loosing only a particular tag group, or all tag groups or even locations ?

3

A specific tag group is no longer showing in my tag library.
The tags still exist, and they show up on the tagged files. Interestingly, I can click on a particular tag and still add it to the missing tag group, but the tag group doesn’t show up on the tag library page?