Very helpful, all of mine are there!
One thing I noticed in the FAQ for “What can I use certificates for?”, it says “Global Premier Upgrades and Regional Premier Upgrades can’t be combined with travel certificates when you’re booking a flight.”
One, that’s not the preferred nomenclature anymore. Two, and I’m pretty sure this is true, but I can apply PlusPoints to a reservation booked with an ETC, just after the booking is complete, and just not during the booking process? I did test it out with booking a flight and upgrade with plus points and it wouldn’t let me put in an ETC on the payment screen