After upgrading from 8.1 to 8.5. All my network gear seem to show up with grey boxes under the All Nodes Tree (cisco, nortels and F5s ) When I dig down to the device or view it on Overview view the icon shows up normally (just green). There are no elements that are in unknown state. I've also tried rediscovering the devices, no luck. Anyone else with this issue using 8.5?
Also note, after upgrade I had to force a good portion of my nodes back to Manged state. For some after upgrade they were UnManaged.