Nope. Been an AAdvantage member since 1997 and never had an issue with my name or number both of which have been the same for the last 19 years.

When I don't have my FF # assigned... for example if the reservation is ticketed simply using my name. Then I pull it up with first name, last name and locator only. The AAdvantage number does not always need to be associated with the rez. But if you are logged in and you pull up a reservation for yourself, the system will link it to your AAdv #. And that's when I cannot see it anymore.