Isn't beets going to just overwrite whatever you did in Picard?
Sometimes there’s just weirdness though - for example recently I bought an album and the band included all the tracks from their previous album as bonus tracks. So I used Picard to split them into the 2 “proper” albums.
beet import "Iron Maiden.zip" -S 4500ad36-5f92-4e4c-bb24-3a9a57faf550