Hi, I have a Macbook pro purchased late 2010. I purchased The Lion OS X from Itunes on Jan 2012. Downloaded and used it for about a year. Had to reboot the computer then, so went back to original OS X. Now when I want to re-install the purchased Lion, I can not find it in my Itunes account. The purchased history shows the purchase, but nothing to show how to download it. Any idea by anyone? Thanks in advance.