Keyword assigned but not showing up in Keyword List
I have a couple of keywords that have dropped out of the keyword list. For instance, I have 85 photos with the keyword NNWR (Nisqually National Wildlife Refuge) assigned. However, NNWR does not show up in the keyword list. It was showing up, but had 0 images assigned, and when I clicked Metadata>Purge Unused Keywords, it was removed from the list.
If I click on one of the images, the Keyword Tags window shows NNWR.
I first noticed this when I tried to create a virtual copy and got an internal error message "can't apply this tag to this image". I tracked it down to the fact that the NNWR tag was applied. If I remove the keyword, I can create the VC.
I also can't apply the tag NNWR to any new images.
I am running Lightroom Classic 9.0 on a new MacBook Pro running Catalina.
