Problems after deleting and recreating group in LDAP


We have deleted a group in our LDAP and have recreated it afterwards with the same name. After that, the group was created with an appended _2 internally by the Nextcloud. It seems like the group was not deleted in the Nextcloud after it was deleted in the LDAP.

The group should be used for mounting an external SMB Storage. I am able to select the group here, but the Storage will not appear on the user side.

Is it possible to clear up the groups, so that the group is appearing without the appended _2 again and is usable for the storage?

We are using Nextcloud 18.0.4 from the Univention App Center.

Thanks a lot for your help!