From what I understand, applecare doesn't "reset" itself with a defective iPhone 5 that needs to be replaced but what about a Macbook Air? In my case, I had a mid '11 that I purchased in march. It needed to be replaced a couple of months later and they gave me a mid '12 model. Did the warranty reset itself with the newer model? It seems to me like it should since it's actually a totally different computer.