I just booked an IAD--FLR r/t through FRA for MsHalls120 and I, and everything worked as advertised.
IAD-FRA was R3, FRA-IAD was R4. made the reservation on the website, got the purchase confirmation in
four minutes, went back in to use GPUs for ugrading, worked without incident. Checked the fare class afterwards, and the flights now show R1 and R2.
Maybe they are getting the bugs out of the system! ^