Hey all,
I wrote a flash/flex to Corona tutorial a few months ago for mobiletuts+ that went live today. It explains some of the differences between ActionScript and lua, and moving logic from one app to another. This tutorial is the beginning of a three part series that will be released in the following weeks. Check it out if you are interested and drop a comment there to let me know how it goes for you.
http://mobile.tutsplus.com/tutorials/corona/porting-actionscript-games-to-ios-with-the-corona-sdk/
Thanks,
Lance