After the 1.1 update the database was cleared

[mike (Mike Fass)]

Ok, thanks for letting us know Alex. I’m going to send you a PM so we can get some logs from you and see if we can get a sense of what happened here.

In the mean time, check out this post where I detail how to change your import dates to be keyed off the files on your hard drive, as opposed to when they were added to Roon:

Old albums showing as recently added after migrating to a RoonServer Setup

Also, for what it’s worth – if nothing was affected except import dates, you can go into the track browser, select all tracks, and bulk edit the import dates back to when the files were modified or created. My Roon database goes back to May, but with my import dates all set to their file modification dates, sorting my library by import dates gives me a nice clear picture of when I acquired each album going all the way back to 2009.