by Stephen Elaschuk.
We'd like to transition from having our users authentication via Mnet to another moodle server, to using it's own LDAP lookup. Is there an easy way to change the authentication method for the existing users? simply updating the "auth" column in the mdl_users table doesn't seem to help, as it creates a new user when they login via ldap, instead of just using the old account which is what we'd like.