I will be taking a few long flights on Qatar Airlines later this year and early next year. When I booked the flights I had given my MileagePlus number because they were then still codeshare with UA. Now it looks like they’re not going to be part of oneworld before my flights leave so I don’t know that I’ll be able to give my AAdvantage number instead. What would be the best strategy to try to get some points out of these flights? Any options?

Thanks!