"Which aircraft" --> No Upper Class?

New here - quick question.

I am taking VS040 (ORD to LHR) end of October Upper Class. I was playing around with the "Which Aircraft?" feature in the toolbox and noticed that on Sept 1, this route used G-VKSS (Mademoiselle Rouge) which is a two-cabin A330. But this plane doesn't even have an Upper Class cabin. How does this work? Do they just move all UC passengers to another flight?

Thanks!

[Neil]

The seat map on that a/c is out of date, all a/c are now fitted with UC, this was one that was originally in just a 2 class config but they all have been changed to 3 class.

We will try and update the seat map as soon as we can.

That makes more sense. Thanks!