Seeing different versions on NAS

[Carefant]

Been doing some tidying up and shifting FLAC files around and MinimServer isn't updating with the new locations*. Thought it might have been a version issue, but MinimWatch tells me MinimServer on my Synology Diskstation is v2.2, update 240, which I believe is up to date. However, when I look in Package Centre on the Synology Assistant it says I'm running 2.1-0600, with no option to update it.

I'm not terribly technical, so this may be a red herring or an issue with Synology rather that MinimServer. In which case, there must be another reason why the re-indexing of files is not happening.

Any help gratefully received.

* as an example, I had one folder called "Pretenders", and another called "Pretenders, the". I've cut and pasted a few albums from the latter to the former and re-scanned. I've deleted the old "Pretenders, the" folder and it's no longer visible in Windows Explorer, but the two folders are still there in the MinimServer view on my Naim app. I've refreshed and rescanned everything multiple times to no avail.