Reassociate a zigbee bulb?

You can try the steps in the following FAQ. It was written because GE bulbs drop off the network on their own, but The same steps can be used in your situation.

The first step in the FAQ, taking the hub off power for at least 15 minutes while leaving everything else on power, will force the equivalent of a Z wave repair for zigbee devices. :sunglasses::bulb: