Originally Posted by
drsmithy
I don't suppose this means I can clock up QFF SCs as well as, say, AA miles in my upcoming DGLOB34 ?
No. The purpose of the second field is to recognise your status that you already have in one FFP while you credit to another FFP.
Eg if you have QF WP but now switching to AA and do not yet have EXP you could credit to AA but still have in your PNR your OW Emerald status.
Not all airlines use the dual fields so YMMV.