Missing premium deluxe content since opting into beta (Steam version)

Since I opted into the Sim Update 15 beta in Steam I no longer have the 787-10 available to fly in the sim:

Things I’ve tried:

Even more worryingly, I then opted out of the beta in Steam and restarted the sim and still don’t have the 787. It’s like it’s deregistered from my account or something.

I don’t have all the world updates installed, but that shouldn’t make any difference right?

Is anyone else seeing this? I’ve raised a Zendesk ticket too, but wondering if anyone else here has seen something similar.