Having device in new device tab does not mean airwave is monitoring, it is only discovered. Airwave will report only the APs which are acknowledged, if you want to have new devices list in report then I would recommand to file feature request at
https://innovate.arubanetworks.com/portal_session/new
coming to your query,defalt all discovered devices will be added to new devices list, if you want to automatically acknowledge those device to any of your Airwave group then we have to make changes to the setting in AMPSetup>General>Automatical Authorization section
Add New Controllers and Autonomous Devices Location: | |
Add New Thin APs Location: |