I have a question on Azure AD Connect.. I have two Forests where Exchange 2013 is running.. Forest A and B.. Forest A Exchange users migrated to O365 and they used sourceAnchor attribute "ObjectGUID". Now Forest B Exchange needs to be setup in Hybrid mode (without moving their mailboxes to O365) with the same tenant where Forest A migrated. That being said, we need to setup AAD Connect to sync users to O365, what should be the SourceAchor attribute i should choose at Forest B. The plan is, before we setup AAD Connect for Forest B, we will stop AADC at Forest A. The question is, do we need to use same SourceAnchor as Forest A or can choose different attribute? ..