I have a Mac mini late 2009 running Yosemite. I think I did a clean install of lion at one point but the rest have been upgrades thru the App Store. I recently bought a late 2010 Mac mini that has a clean install of Yosemite. I really don't want to have to try and remember all of the random settings and stuff I have so was going to just do a TM machine restore. So now for the question. If I do that will it bring over all the stuff from previous OS's which could slow it down? Or is there not much difference? Thanks for any help you can offer