Secure by default is Retiring the Move message to Junk Email folder policy option for high confidence phishing emails
We are retiring the Move message to Junk Email folder policy option for high confidence phishing emails in Exchange Online Protection (EOP) anti-spam policies. Existing policies that rely on the Move message to Junk Email folder option will automatically switch to the Quarantine message option. The Redirect message to email address option is unchanged.
If you are not using the Move message to Junk Email folder option for high confidence phishing emails, there is no impact for your organization.