Migration from SCCM 2007 to SCCM 2012

[kungfumaster]

I have an SCCM 2007 infrastructure with two primary sites. I need to migrate both the sites to SCCM 2012. how do i go about it.

 

I have already installed a parallel sccm 2012 site, specified the source hierarchy gathered data from the source hierarchy but now if i start migrating the collections and objects will it not bring all of them into a single sccm 2012 site.?? Assuming i migrate all objects from both the sccm 2007 sites to a single sccm 2012 site, how will i later put back the objects that belonged to the second site?? is it going to be done manually??

[jeaostro]

How do you want the 2012 hierarchy to look like? One primary and two secondary sites?

[jeaostro]

and yes you will need to push the content to the secondary site DPs. Move the boundaries, Then upgrade the clients so that they are assigned to the secondary. How many will there be at the secondary site?