Double upgrades are very rare. I have had one as an op-up in 2006, I think. I didn't ask for it, it was obviously given for operational reasons only.

Each time, did you actually ask for a further upgrade, knowing you had already secured one? If so, maybe it was also granted for operational reasons.

I have had overly chatty FAs openly discussing the behaviour of unnamed F passengers, stipulating that they were "only on award tickets". So despite the doubters here, it's obvious to me that the information is available to them, for any upgrading or award ticketed passengers.

Anyway what the hell does it matter whether or not they know?

We're talking about mileage/sjywards upgrades here, not op-ups.

I'd already upgraded from Y to J. Once on board, I asked to upgrade from J to F. Both times it was granted after a bit of checking.

I did get a double op-upgrade on BA once. From Y to Y+ at check in, and then Y+ to J at the lounge entrance.

I did just have a look at my own profile recently and as above (things like upgrades are noted especially as it will say - �meal in Y/J� alongside the itinerary note).

It does have fields for central profile notes, crew observations, preferences, even the Skywards lifestyle preference thing that no one fills out, a separate field for critical incidents that may have occurred recently (e.g. misconnect), previous travel history (although strangely this was blank for me so probably has synchronisation issues), upcoming flights, connections etc.

As for upgrades - pre-calculated mileage cost for Y-J, J-F, Y-F etc. but also whether the ticket allows for it (e.g. try paying cash to upgrade a miles award
and it shouldn�t work).

Interestingly I had upgraded in the lounge and my mileage balance had not updated to reflect the deduction on board which is probably why upgrading an upgrade is (usually) not allowed. But I think the upgrade can technically be forced through.