Attendance command is broken / Stored Person Overrides are broken

[reivilibre]

The attendance command shows:

• an 'accepted' percentage, which is the number of invites that are both Matrix and accepted.
• an 'email' percentage, which is the number of invites that are e-mail, regardless of whether they are accepted or not.

I suspect this relies on the stored person override system, which has been broken this year and the last, as that would, when someone accepts an e-mail invite, track the Matrix ID against that person.

[reivilibre]

Looking around, it seems the stored person override system relies on having the person's ID stored in their third-party invite event. We appear to be missing that information?

This is a lie, the data is present in Matrix (I was looking in the acceptance event).

So the issue is that the stored person override system is not kicking in. Undiagnosed for now.