Where is the LDAP auth settings stored in the Moodle server?

I have recently updated the Moodle LDAP-auth settings under *Site Administration* > *Plugins* > *Authentication* > ***LDAP Server*** I have done this to change the LDAP server settings from using our old **EDIR** to our new and preferred **AD**. Now I can't log-in. I have gone into the db and updated the settings (reverted back to exactly how it was before the changes) in the config_plugins table (mdl_config_plugins), but the change does not seem to have taken effect. Still getting the error when I try to log in: >LDAP-module cannot connect to any servers: Server: '[new-ad-server].[business-domain].[foo].[bar]:3268', Connection: 'Resource id #17', Bind result: '' Not sure why it's still using the "new-ad-server", when I've updated the settings to be our old (working) ldap server... Obviously, the settings seem to be stored somewhere in cache, or in-memory somewhere, but I can't seem to find it. **Where are these settings stored in the moodle directory?** Alternatively, how on earth do I fix this issue when I can't log in (using either ldap, or manual login) to update the settings?