Late September I added 3 Ikea bulbs and they joined with the stock Zigbee Edge driver. A few days later I noticed they were using the groovy DTH.
I added three more Ikea bulbs October 9th and they were also using the stock Zigbee Edge driver. I added the custom Zigbee Light Multifunction MC driver for an Ikea LED driver and but I never changed the driver for these three bulbs. Today when I noticed this I tried to change the Edge driver back to the stock Edge driver it does not list any alternate Edge available drivers.
All the lights are working so it is not an issue yet. My hub has not migrated yet.