In OpManager Plus or OpManager with Add-on enabled, the devices added to the add-on modules such as NetFlow, NCM, Firewall and OpUtils were not only listed under their respective modules but also discovered and listed under the OpManager Inventory as 'UnManaged'. With every OpManager service restart, these devices kept automatically showing up in the Inventory despite deletion or if a new flow (in case of NFA) was generated. These unmanaged devices listed alongside the actual devices discovered via OpManager, caused confusion by jamming the Inventory page with junk/ghost devices.
To address this issue, a new page named 'Discover Add-on Devices' has been added under the Quick Configuration Wizard. The devices that sync from the add-on modules, are added to this page instead of the OpManager inventory. These devices won't be available in the inventory unless manually added from the list of devices on the add-on page. This restriction has been enabled by default, and the option can be found at Settings -> Discovery -> Discovery Settings -> Restrict device sync from Add-on.
To manually discover these devices into OpManager,
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