LDAP synchronization doesn't import users
I've a problem, when I do a LDAP sync, no users are imported. When I do a preview LDAP sync, I see the users who have to be imported. So I search te logs for errors and myna of these errors are reported: An error occurred trying to create the user the 2nd time. So I check the Filr database with phpMyADmin ans choose the SS_Principals table. I see many deleted users there, even the users I have to import. So how can I delete or cleanup the SS_Principals table?