Either they changed the terms or my assumptions were incorrect.

I know that activity from before the Badges program existed was not counted. I was under the assumption that activity occurring after the Badges program came into existence but before they added the badge would be backdated and count. However, I must be wrong.

I flew on the inaugural flight to Atlanta and never got badges credit for that flight. They didn't add the Atlanta or the Early Adopter Atlanta badge until mid June, and the flight I took at the end of June was the only one that counted.