Just did that. Most work was flashing the correct firmware onto the zigbee stick and now I have transferred almost all my Hue and Ikea lights. Except for those farthest way from the stick, they seem to be unable to join.

If anyone got a hint how to join these without moving the lights (screwed to the ceiling) or the stick (integrated in my server cabinet), I’d be grateful.

I‘m pretty sure that‘s how literally everyone in their respective information bubble feels. Of course we‘re the only ones who are right ;-)