A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,370
As a very general principle, *A miles earning is based on the operating (metal) carrier, not codeshares. Assuming RJ is a member of *A, you need to take the US fare class and map it into a fare class for RJ marketed flights, then look for this fare class on the US earnings table for RJ flights on the US website.