I'm only a lowly BA gold but my BP for my MAD-VGO flight in a couple of weeks says Group 0. My OH's says Group 4, and this has evidently confused Iberia as when I loaded our BP's to my phone wallet just now, I had to accept a warning that my hand baggage would have to be checked in as the flight is full, and I am to board last, apparently (or maybe just OH, it doesn't specify).

In the event it doesn't really matter as we have a bag to check anyway. Well, hopefully we have, on the basis of the gold status, but all bets are off when it comes to Spanish bureaucracy, of course. We'll see what happens at MAN a few days earlier when our trip gets underway!