Re: Entra ID Allows People to Update their User Principal Names

Yes, exactly. And don't get me started on how that "change" affects business applications like, oh, I don't know, D365!  In which the new 'name' or 'new ID' does not get updated (even though it's a Microsoft product.  And guess what, you can't update a name or ID in D365.  You must disable the old user and re-import the edited Entra user to make them sync.  Because the old user (old name) still shares the telemetry ID / Object ID with Entra.