If you use the "ID contains" pop-up menu in Xsan Admin to search for user ID (uid) or group ID (gid), the search will only check the Local NetInfo domain and find only local user records. It will not find users or groups in your Open Directory, Active Directory, or LDAP directory domains.
To find users or groups in your Open Directory, Active Directory, or LDAP directory domains based on their user ID or group ID, please select "ID is" from the pop-up menu in Xsan Admin.