At some point Southwest will need to address this. I would email both Airtran and Southwest through their website (if for no other reason than to create a record). Then call Southwest at 214-932-0333 Mon-Fri, 7am-8pm CT and explain the situation.

In my opinion this is something that should have been addressed a long time ago, but what do I know, I'm just a customer.

Let us know what happens.