My RTW ticket is sat on the desk..and now some A inventory has become available on a more convenient. Our corp TA has booked me onto this flight which is a straight forward change of flight number and time...no change of route.

1. Do I need to have the ticket re-issued? It is an AA sector on BA stock RTW
2. Are AA's Admiral Club agents up to the task of a reissue or not?

Thanks!