I'm currently running the GM version of Lion on my Mac but want to pay for it fair 'n' square through the App Store. I used the Option + Click trick to download Lion from the store. When that finishes, am I able to run the installer to overwrite the GM build with the current App Store build without losing any data? e.g. Apps + app data, iLife libraries etc. Essentially I want to legitimise the install, pay for the product, but avoid having to restore from a Time Machine backup. If I am required to restore a TM backup (after the App Store installer), will I be putting the Apps, libraries etc into the legit build or end up putting the original GM build back on the machine? Thanks!