I was waiting to post this until the results were announced which they were today. O'Reilly just posted the winners of the Adobe AIR Cook-off and I'm pleased to say I won the grand prize!
My recipe was Migrating Serialization Changes in AIR. Thanks to anyone who voted for it.
I have a follow-up recipe I haven't gotten to write up yet, but I'll try to get it up in the next week. It will provide a solution to add the marker which is required for this serialization to work to the front of your structures if you already have files being serialized in an existing AIR application and you want to start taking advantage of this migration technique.