Categories changing automatically

If you take a look at an Uber transaction via the API, you’ll see that the default for that merchant is Transport.

But if you change a merchant’s category (when you order from Uber Eats & the transactions are grouped under Monzo [which does need fixing], for example), Monzo remembers what you’ve changed it to & applies that category to all future transactions, until you change it back. I’m guessing that, that’s what you’ve done here.