Document Library - disappearing files


I have a couple of sites running FarCry 7.2.9 on Lucee and Nginx as a Web App at Azure. For the document library and images, I have mappings to Azure file storage - dmfile folder is in a separate fileshare than the webroot . The client often shares the URLs to files using the filename instead of the objectid ( The client has been replacing files via the webtop and claims the URLs no longer work after a period of time. I know a file becomes unavailable if it’s put into draft, but all files have been approved. I don’t see any errors in the lucee logs. I’ll check the nginx logs next, but is there anything else I should check?