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Hi guys, I was hoping someone could provide some guidance. We are currently in the process of a forest/domain consolidation. We have two AD forests with one domain in each. We are in the process of standing up a third forest with one domain in it on 2012 R2 that we will be moving all resources and users to over the next year. I understand that i'll need to bring up a new primary site with a new Site Code in the new third forest/domain. Some other details about the SCCM 2007 environment: One Site Server running SCCM 2007 R3 One Remote SQL server running 2008 Forefront Endpoint Protection is Integrated WSUS with a remote WSUS server on 3.0 is integrated Windows OS Deployments with WIndows Deployment Services are integrated and currently configured for deploying Windows 7 Parallels Management Suite for Managing Macs is integrated We are currently deploying many applications via SCCM Updates Publisher 2011 is current integrated with SCCM on the site server. My question is, should i migrate from the existing SCCM 2007 environment to SCCM 2012 whilst still in the same forest first before migrating collections and packages etc to the new forest? Or just migrate once and migrate the SCCM 2007 forest collections and packages etc to the new 2012 R2 forest so as to not do double work? Any pros and cons either way? If anyone has done this sort of migration i would appreciate your recommendations. Thanks Joey