User Configuration > Administrative Templates > Microsoft OneNote 2016 > OneNote Options > Note Flags
User
HKCU\software\policies\microsoft\office\16.0\onenote\options\other
This policy setting allows you to configure tagged notes. If you enable or do not configure this policy setting, the option "Leave original tagged notes unchanged" will be checked. If you disable this policy setting, the option "Show original tagged notes as dimmed" will be checked.