<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by JSD:
Just curious... how did they differentiate the "old miles" from your "new miles" in your AAdvantage account? And why have "old miles" at all? Did the program fundamentally change sometime around 1989?
I've only been an AA member since '92 so thus predates me a bit.</font>
In 1989, AA changed the rules of the AAdvantage program so that miles could expire. Not sure if there was a class action lawsuit or not, but AA decided to honor all miles earned prior to that date.
Such "old" miles don't expire and has the old award charts associated with them indefinitely.
No miles since then has those provisions. AA re-wrote the AAdvantage terms and conditions in light of its experience.