daniellam, being outside the industry I have no idea what you're talking about, but you've earned by instant admiration for being able to spout details like that.

My own experiences with AA, too often recounted here, would make me shy about letting them deal with an e-ticket. On one re-issue, even the paper ticket they handed me wasn't recognized by computers other than theirs. Fortunately, I wasn't running late when I joined Cathay at JFK - it took them an hour to sort it out (which they nicely did for all the remaining segments).

It may be an issue of training budget.