Re-tagged items appearing in Recently Added

[jarvis]

Hi,

I'm using MinimServer 2.1.2 update 218 for Synology NAS (DSM 6.x).

Today I wanted to tidy up the list of Genres, removing things like Indie and Britpop by re-tagging the items in those genres as Rock, Pop, Alternative, etc.

I re-tagged all albums by particular artists at once and then re-scanned. At first, the albums moved into the correct genre as expected (I didn't check Recently Added at this point). Then I did the same with a 2nd artist and after a re-scan, all the albums from the 1st artist appeared under Recently Added.

I have tried to re-produce this as follows:

1. Re-tagging an album (Bjork, Telegram) from Electronica to Alternative - that still left other albums by other artists tagged as Electronica.
2. Setting MinimServer logging level to Debug and triggering a re-scan. The log shows it discarding the cache for each file and re-reading it - fine.
3. Re-tagging another album (Various, The Ultimate System Set-Up Disc) from Sound Clip to Classical - that left no other audio files with the genre of "Sound Clip".
4. Setting MinimServer logging level to Debug and triggering a re-scan. The log shows it discarding the cache for each file and re-reading it - fine.
5. Recently Added now shows Bjork, Telegram as added today. Looking at the log for the 2nd refresh above, it doesn't try to update the Bjork, Telegram album on the 2nd refresh as it's not changed. So why does that now appear in Recently Added?
   

I have the MinimServer.log file for this and can supply the contents of the etc/recent folder as well if required.

How can I fix this situation with my library?

I thought of using a tool to change the modified dates on the recently re-tagged files back to a much older date, delete MinimServer's cache file while it's not running then re-scan?

I've had a nightmare trying to post the above, with the server show a "Forbidden" error unless I take bits out, put them back in, etc.