Hi, this may have been answered in the JAL master thread but I couldn't find it with searches; I'm looking at buying DFW-NRT/HND-SIN economy seats next September then doing C class upgrades with miles; in searching Expert Flyer I see plenty of availability but when I start looking at the actual ticket options on AA it doesn't seem to show anything. I tried another route of using miles to book economy but AA site shows no options and tells me "something went wrong" they couldn't find a match. Is there something functionally I'm doing wrong when digging for these flights, or is JAL holding out on me when going through AA?

Sincerely,
A Genius Who Just Found Out I Can't Use Miles Through Doha