[pkscout]

Fanart in the default location (C:\Users\user\AppData\Roaming\Kodi\userdata\addon_data\script.artistslideshow\ArtistSlideshow\) keeps repopulating after I delete them. I have a custom location defined in the artistslideshow settings (M:\Music\ΩArtistSlideshow).  It's 10gb in 4900+ folders. I need the space on my c: drive.

C:\Users\user\AppData\Roaming\Kodi\userdata\addon_data\script.artistslideshow\ArtistInformation\ is pretty much empty (23 folders).

Any help appreciated.

It would be helpful to get a screenshot of the STORAGE area of the AS settings.  There are two storage locations in the settings - one for artist information and one for artist fanart.  AS should never store artwork in mutiple locations without a setting change, so if you believe you are seeing that, I need to see a debug log (both Kodi and AS debugging on) where art is being stored in two different locations.

To answer your other question, the trimming is only for the Kodi addon folder and only appears if you select that as the storage location for images.