Just updated IMac to newest Catalina version 10.15.1 soon after got a message upon trying to open Lightroom classic cc that Catalog was incompatible and needed to be updated and there would be no way to reverse it. Scary but since I back up often and couldn't even open my lightroom program...I had no choice. After updating catalog to "be compatible" My file paths have changed the way it is handling my external drive. It is now showing a duplicate for the same drive. The duplicate no longer shows "/volumes/" in the file name/path on my latest import??? Along this all my old files from the original drive, are greyed out and on in develop module giving me the "file not found". If I try to locate it, by folder I still can't work on it in the develop module unless I find each file, one by one. PLEASE HELP! I am a professional photographer that pulls from my archives for content, etc. I cannot located these files one at time. How can I fix this? What is causing this?