Hi ,
I’ve had alot of similiar errors. Try using “Fixup Redirectors in Folders” for each of your content browser folders.
I actually recommend that anytime you do an asset move, follow up with the “Fixup Redirectors” step afterwards. In some cases, I found, Move asset, shutdown editor, open editor, “fixup redirectors” is my preferred steps.
It seems that even when you move an asset, there is a ghost entity left behined, “the redirectors” which still exist. They are supposed to clean themselves up on editor restart, but sometimes they dont.
Hope that helps!