The c7 to c8 migration worked seamlessly. However, some of the problems that I had with the c7 hub still persist. Mainly, they have to do with the Hue devices--8 light bulbs, and five motion sensors. The lights mostly work, but sometimes they do not do what they are supposed to do. But the main problem are my motion sensors. They are not updating at all. I use them to monitor motions, lux levels, and temperatures and they are simply not updating. When I look at them in the device table, the last time any of them updated was 3/14 when I updated the hub software to the version with the ability to rebuild the zigbee network. I rebuilt the network since a couple of my devices--mainly contact sensors--were not responding. The contact sensors work fine, but the motion sensors--though connected--are not updating.