thanks for the summary!

might I just quickly add, that earlier this year I successfully waitlisted for an upgrade using another person's AM account (I'm one of their redemption group nominees),
however the agent refused to allow me to use points from my own account, saying that the waitlist was entered using a different FFP no.
therefore it's probably best to decide from which account the miles should be deducted from (if you're in someone's redemption group), and stick with it!