I have already been asked this question several times, and I also discover it again and again in social networks or in the community. Manfred also had problems with the motion sensor in the same room after setting up new Hue lamps. I connected two new Hue White bulbs on the bridge and put them in an existing room with two other bulbs and a motion detector.
Community Question of the Week: New lamps do not react to motion sensor Scenes must be saved again
Scenes must be saved again