AIP Preview Do Not Forward

Hi!

I try to configure a AIP-templete for Confidential\External Permitted.

I choosed the protect + user defined properties (preview) and allowed users to use the "Do Not Forward" in Outlook.

When I use the label in Outlook it does not encrypt with "Do Not Forward" it only labels the email as "External Permitted".

Can anyone help please!

Thanks in advance //Magnus