I've been pulling my hair out trying to create an action that will copy everything after a certain phrase to a new tag, and delete it from the original one after it's finished copying it.
Basically, I've got a shit ton of tracks with "Artist Feat/ft/featuring LISTOFARTISTSHERE", and I want to keep %Artist% in the artist tag, and move everything after (but NOT including) ft/feat/featuring to %composers%.
Here are a few different semi=related scripts that I tried editing to make work, and for some reason they just completely delete the artist field, and don't even copy the feat to %composers%
1: %artist% & $mid(%composer%,$add($strstr(%composer%,'Featuring.'),6),$len(%composer%))
2: Guess Value, Source Format: %artist% Guessing Pattern: feat. %composer%