Today I got the new Beta (not Dev) update version 86.0.622.1. I was never "logged" into the new Edge and just used a standard profile. Also I use a local Windows Account not MSA. For some reason though with Version 86.0.622.11 I was logged into my MSA. I don't know why and how Edge even got those Information without asking me first. For me this is a big problem.
If you guys want to convert local profiles to MSA, at the very least you should ask for permission.