GroupManager

Error: I've used some extensions which created a few groups to Bluespice. I've removed the extensions itself, but those few groups are still in group manager and I cannot remove those as they are 'system groups' which they really aren't. What/where is the file I can modify to remove those groups?

'Solution: Have a look at the <mediawiki>/extensions/BlueSpiceFoundation/config/gm-settings.php <mediawiki>/extensions/BlueSpiceFoundation/config/pm-settings.php files and remove the references to those groups.