Thank you both for your responses.

I'm still so confused......I just spent about an hour on the phone with the Mileage Plus representative and long-story short, she was only able to calculate my RQMs for the *A operated segments only. She was unable to verify my total PQDs earned and nowhere can I find a detailed breakdown of each segment's costs. The entire reservation is on a single ticket number of 016 stock; so I'm unsure why they can't seem to confirm any of this information. The PQDs are what I care about most; I'm willing to forgo any mileage earnings for Alaska on the Hainan segments if I can get PDQs for the entire value of the booked ticket.

As things stand now, if I'm unable to get clarification before my departure, I'm might leave the Frequent Flyer fields blank and have them added at the airport when I check-in for each flight. For the HU flights, I will provide my AS number and for the *A segments I will give them my UA number and just hope for the best. Based on the response above from cfischer, I shouldn't have an issue doing this since I'm won't be utilizing multiple *A accounts. Do you guys feel that I'd be better off adding my UA number now for the entire booking, and then just manually asking to update the HU segments to Alaska? I wonder if I'd have a better shot at getting the full PQDs if I went this route.

Andrew