You can batch modify patron attribute in a batch, but you cannot completely delete the attribute on a patron's account. To test: - Add an attribute to a patron's account. - Perform batch patron modification. - Under Patron attribute you can either add a new attribute or update existing one. You can set the attribute to blank to clear the values, but the attribute will remain on the account as blank. It would be nice if there's a way to delete the patron attribute all together.
Created attachment 175020 [details] Delete checkbox
You can already do this, just check the checkbox. I agree however, it's not hugely clear
Ha.. except it's broken in 23.11 and 24.05.. fixed by bug 38266 which should get backported soon.