Suppose that I have a slapd instance that failed to register itself with the configuration directory due to a bad password, or that I have an instance that I'd like to move to a different configuration directory. Is it possible to re-register an instance with the configuration directory? If not, should I attempt to create an LDIF with the required info and register it manually? I'd prefer to avoid removing the instance and setting it up again if it's possible and not onerous.