Originally Posted by
Counsellor
However, the second part of the OP's question makes it more difficult -- in that case you're asking for one program to essentially give you double credit for the same flight coupon, and I have never heard of that happening. It is similar to asking United to give you double credit when they cancel one flight and rebook you on their flight on the same routing one hour later.
Exactly. It doesn't matter whether the reroute is on the original carrier or on a partner, the OP is hoping to receive double credit in the same FF program. I think it's safe to say that ain't gonna happen.