I migrated a folder with many albums to a new HD. To do this, I closed Roon while transferring the files from one HD to the other. I deleted the folder on the HD from which I copied and restarted Roon. I immediately added the new HD to the library and Roon started monitoring it. However, Roon understood that they were new files and started duplicating the albums that were there, even though the original version (from the HD I copied) no longer exists. I wanted it to migrate the albums while keeping tags and other information, but no, the tags are linked to the “ghost” albums that no longer exist.
How do I revert this so that Roon understands it as a migration? I tried rebooting the server and rescanning the original HD, but it didn’t work. The Mac is still analyzing the new files because there are many albums in that folder.
I think I got it, I removed both HDs, added the first one (where the files were before) waited for Roon to catalog everything, after that I added the second HD with the transferred files, it seems to be migrating without duplicating, it will take a long time as there are about 15k albums, tomorrow I will check if it was correct.
So the trick when moving files is to either do it within the same watched folder, or to edit the location from the former to the new instead of adding a new location. Otherwise it’ll see files as new. At least that is my understanding. I’m not sure if you can achieve what you want - moving part of a watched folder - at least if I’m understanding correctly what your goal is.
If you want support from the team you need to put your request in the Support section using the official “get help” path (pinned to the top).