Windows 10 Mail, changing contact in people app not reflected in mail

Hello everyone,

My problem is that I have a contact with the wrong name. Lets say "Jane" and I have hundreds of emails from that address, but now I want to change her name to be correct.
If I go to people app, find the profile and change the name, the change is not reflected in mail
If I go to people app, delete the contact, and make a new one, the old Jane contact still pops up in Autofill
If I go to people app, associate the Jane contact with a new one, the old Jane contact still pops up in Autofill

I turned off Auto-add recent contacts in settings, I went to control panel and reset the mail app to default settings, and I tried editing the Jane contact to not have the email address in it, but nothing will let me create a new contact that is associated with an email (that has been emailing me for years) it just keeps remembering the deleted contact.

There is a way to get rid of incorrect Auto-Complete entries, rather convoluted.
I have found my previous answer from back in May, to repeat:
One way of getting rid of say a misspelled one is to intentionally put it in to the People contacts and delete from there. Some editing of the entry maybe required.
Mail App: Removing drop down email address suggestions

N.B. the locations of supposed files by 'bradfordcanuck' are not on my PC at all. Just checked again, and I remember it was the same months ago.

Make a suggestion to MS feedback to include say a highlight > Right Click delete(wrong) entry option for Auto-Complete entries.