When migrating ConfigMgr 2007 to 2012 (Side-by-Side) it's possible to use Migration Jobs to copy collections and objects. Microsoft has build-in Migration Jobs for doing this, and it's doing a great job! Today I used the Object migration for copying software packages, drivers, driver packages, images and task sequences. All content will be imported into the new ConfigMgr 2012 database. The wizard will looks like this:
Just select everything needed, and save a lot of time!
The following will be mentioned during "Review migration job information".
In a few steps the source location is mentioned. Before or after migration the source location may be updated when pointing to the old ConfigMgr 2007 server. For software packages the following tool can be used: Coretech Package Source Changer.
For driver packages and Windows images I haven't find a good solution yet. Maybe someone can share a script for doing this?