American published new mileage earning rates for flights on British Airways and Iberia effective October 1. But they only published the changes on non-US websites, and only when viewing those sites in their native languages.
It turns out that ending the ability to earn full mileage on British Airways and Iberia flights was something published in error and that has been reverted on the website.
One imagines this was at least seriously under discussion, and could come, given the reduced earning that the British Airways and Iberia programs offer for discount fares on their own flights. But that day is not today.