Wrong number of users in Settings-Support

Hello everybody

I have an LDAP connection in Nextcloud version 18.04 with about 90 users.
If I look in the Nextcloud under users I only see these users. In addition there are 2 local administrators.
I used to have a lot more local users on my system and have deleted them all.
Nevertheless I still see over 200 users under Settings-Support. With “sudo -u www-data ./occ user:list” only the visible 90 users are shown.
Do I still have to clean up the database somehow?

Thank you very much for your help.