Duplicated [?] people: WebUI vs configuration.yaml of `Person` integration

I’ve noticed that I can configure people via YAML: Person - Home Assistant

So I’ve decided to do that (git tracking yaml changes is FTW).
I’ve written down all the people I’ve already had in the WebUI, restarted and…

http://homeassistant.local:8123/config/person is now showing two sections:

  • “the old” list of people (that I can click and configure in the WebUI as previously)
  • Configuration.yaml persons section, with the list of the same people (dah) (but I cannot click them to configure via WebUI)

So… my thinking was… maybe YAML created a list of different people (didn’t associate my YAML config to the WebUI config),

BUT, searching person. via http://homeassistant.local:8123/config/entities is not showing me any “doubles”:

So… I’m confused… what’s going on?
Are my people doubled or not?

I can already see that my WebUI person’s device tracker list was NOT updated upon the YAML config list → for example, Dawid has 3 device_trackers configured in the WebUI list, while only one in the YAML config:

The configuration.yaml part:

# https://www.home-assistant.io/integrations/person/#configuring-the-person-integration-via-yaml
person:
  - name: Dawid
    id: dawid
    user_id: ca61d15956594a69a8d471315cf86145
    device_trackers:
      # notice only one device tracker
      - device_tracker.dadafon

  - name: Grzesio
    id: grzesio
    device_trackers:
      - device_tracker.grzesio_phone_at_iphonedetect
  - name: Szymek
    id: szymek
    device_trackers:
      - device_tracker.szymek_phone_at_iphonedetect

  - name: Dawid Guest
    id: dawid_guest
    device_trackers:
      - device_tracker.dawid_guest
  - name: Neighbor Guest
    id: neighbor_guest
    device_trackers:
      - device_tracker.neighbor_guest

anybody knows what’s up?