I booked a flight on AA.com, which includes 2 flights on Iberia Express. Through aa.com, it let me select seats for my Iberia flights. On AA's site, it now shows those seats for one of the flights, but not the other. And now, it isn't letting me select any seats for the other flight.

For anyone whose done this before with AA/Iberia, are those seats likely saved? If not, how do I best go about getting the seats I want? I'm Platinum if it makes any difference.

Thanks!