We have Microsoft System Center 2007. We are trying to update a few Collections based on OU in Active Directory. However we are unable to get it query any OU successfully. In essence we are using the 'System Resource' Attribute Class and the 'System OU Name' Attribute. For the value I have tried everything from the OU name, to the canonical name. No matter how I try to update the Collection by OU it does not update. I am however able to update the Collection successfully by IP address, computer name etc.