Question about booking Airtran for December

[chisoxcollector]

I have many A+ credits that I need to use. My wife and I are going to go to Las Vegas in December. If I book business class seats on an Airtran flight for December, can I be fairly certain that it will still be an Airtran flight in December, rather than transitioned to a Southwest flight? I'd hate to spend the extra credits for business class only to end up on a Southwest flight.

[PA42]

Yes, as of right now it will be FL.

[henryf]

If WN is your carrier, call the A+ line and ask the CSR to restore the credit differential needed for the BC ticket