Originally Posted by
bpk6h
Not the same situation, but there is one more wrinkle. One only needs to find advantage redemption space in order to use a PPS upgrade certificate.
I didn't go there as I don't think the OP is QPP / TPP so not relevant. IIRC, Advantage awards book into revenue bucket D for Biz and for First into A (versus I and O as saver award) - forgot what Advantage bucket is for Eco as I never redeem for that

(saver is X of course).