We have an integration with LDAP that's working great, however, we recently noticed that if a user's manager gets blanked out on LDAP, we're not automatically updating the manager record in ServiceNow (should be empty). It just gets ignored, so the manager record then becomes incorrect.
The source for the u_source field looks like this: ldap:uid=someid,ou=People,o=bestbuy.com
The source for the u_manager field (if exists) looks like this: uid=a123456,ou=People,o=bestbuy.com