Weird Calculation Issue: Garmin vs Chronometer

Options

Hello,

I've recently bought a Garmin watch and for the most part it imports fine. Just today I noticed something strange with the data though.

As you can see in this first screenshot, there is some daily activity imported (I'm sick today so haven't done much!).

Screenshot_20240327_140208.jpg

I've been playing around with some of my settings because I've noticed since I got my watch and relied on the daily activity import, I feel extremely hungry (I used to instead use Chronometer's Sedentary setting to cover this).

Anyway, now I plan to only use Garmin to track workouts, so I deleted the Daily Activity entry in the diary.

You can see from this second screenshot that when I deleted the Daily Activity of 31kcal, the remaining calories actually went UP by 22.

If I'm removing activity, shouldn't I have fewer calories remaining?

Screenshot_20240327_140230.jpg

A bit baffled by this - is it the wrong way around?

Thanks,

Ben