[Zope] changing the LDAP server address of an LDAPUserFolder

A question about changing the LDAP server address of an LDAPUserFolder: The address of our LDAP server has changed from ldap.mydomain.com to ldap3.mydomain.com. To accommodate the changes I tried the following: Adding ldap3.mydomain.com LDAP Server under the configure tab and then deleting the previous ldap.mydomain.com nearly works except users with locally stored roles no longer can access the site. Is it possible to change the LDAP server setting and retain the users with locally stored roles? Or do I need to make a record of the users with locally stored roles and add them again? Zope 2.7.2 Python 2.3.4 LDAPUserFolder 2.4 Regards, Sion