Basic Authentication and Exchange Online – September 2021 Update

Basic auth is currently disabled in our tenant with an organizational level default Authentication Policy.:

Set-OrganizationConfig -DefaultAuthenticationPolicy <PolicyIdentity>

However, we have a small subset of accounts which still require basic auth for EWS and IMAP so we have a second Authentication Policy which allows basic auth over these protocols, and this policy is applied individually to these accounts. This works as described in this doc: Note that the authentication policies assigned to users take precedence over the default policy. To configure the default authentication policy for the organization, use this syntax:  

When Microsoft disables basic auth in Oct 2022, will that override and break the Authentication Policy-based exception we have applied to our small subset of accounts which still need basic auth over EWS and IMAP?