I am new in learning about SCCM. I want to ask why my collection member didn't migrated completely from SCCM 2007 to SCCM 2012? It happens on random member. I am sure have specified the source hierarchy correctly and no permission issue. I run collection migration, where in the source hierarchy I dont have any subcollection (just standard collection), all collection migrated successfully but most of them has 0 member. The number of member in "all users" collection between SCCM 2007 and SCCM 2012 is also far different (SCCM 2012 has less member than 2007) Please help me solve this. Thanks.
PS: I know in SCCM 2012 the collection for user and workstation are now separated but still combining the numbers of user+workstation in 2012 has less number than 2007.
PS #2 : the collection migration jobs is complete without any error or failed alert, and while migrating, the button "view objects that can't be migrated" is greyed out, means that no objects that can't be migrated