I'm getting a little confused about Time Machine so need some help! I have a Mac mini running Mavericks. I have Time Machine running regularly. I would like to do a clean install of Mountain Lion. Is it possible to then restore my data and apps from Time Machine - i.e., everything EXCEPT the OS? I'm sure one of my Time Machine backups is a snapshot of my system running Mountain Lion, but I've been running Mavericks since October 22nd, and that backup will be pretty out of date in terms of data and files. Do I need to use Migration Assistant?