I have a question. I had a MacBook and did a time machine backup. I then bought a new computer, and transferred all of my data. I have been working for a couple of weeks on the new computer, but have decided to switch back to the old computer. What is the best way to get my new data on my old macbook. I can do a time machine back up of the new system, but once I have it, how do I get it on the old computer without formatting the system? Let me know.