TWA members will receive an automatic one-time credit in their American AAdvantage account to cover the entire balance of their Aviators activity.

Doc,

I think the word you want to use here is "unused" instead of "entire." There is still a question which AA hasn't answred yet which is what if anything they will do with TWA "Program-To-Date" miles (for use to move one's AA balance toward Life Gold/Plat).