We use MIIS for galysnc.

I found Active Directory management agent uses the objectGUID , in the below link.

http://technet.microsoft.com/en-us/library/cc708678%28v=WS.10%29.aspx

objectGUID are imported to CSpace implicitly and used to link AD objects and CS objects in GALMA and possibly also in ADMA ?

BlackJack,

The objectGUID is the anchor attribute for both the AD and GAL management agents.