Originally Posted by
jonwyup
I have to admit I'm still confused. In this example, the Platinum member had the upgrade, and tried to sponsor the 1K member? Or was your example the other way around? The word redeeming here is very confusing!

It is the account from which the miles/rpu/gpu is redeemed -- it is where the miles/rpu/gpu came from.
If I as an 1K sponsors another traveler (regardless of status) by redeeming one of my upgrade certs, that traveler's waitlist status will be mine (1K).