QOS device not found

So I understand that if you reset your xr1000 and then clear offline devices in the device manager, and one of the devices you cleared happened to have its own prioritized setting, it will trip the "QOS device not found" prompt, but is there a better way to rectify this issue without factory resetting every time it happens?? It's super time consuming having to install firmware, factory reset, reconfigure your router settings, dashboard ect just because you deleted an offline device, or, as I'm finding, any other issue this router seems to have. There has to be or should be a better way to handle small things of this nature without having to clear your afternoon to fix it.