@Alcuin: Yup, the enthusiasm was now updated, it was one of the things I had to estimate or guess, like the arena size yesterday. Now I have a fresh backup unpacked and I extracted the correct data for both ent and arena for all the teams that had been botified by the extra economy updates.
@Everyone else: Please understand, this is a very unfortunate bug, not a deliberate attempt to hurt the French community. We're here, working for you very long hours (15+ yesterday) to fix this the best we can before game day, but of course there will be unwanted consequences. We'll try to figure out a way to compensate for this adequately.