I don't know, whether this is an intended behaviour or a bug. I set up some channel groups for RGB pars like in the 2nd video tutorial and used them in some scenes. Now I bought some additional pars and added them to the channel groups. Sadly they don't get includes in the scenes, that use these channel groups.
I had to deselect and reselect the channel groups in each scene and set the values for each channel manually again. I thought this abstract channel group could prevent me from that. Or is there another way to work with an Abstract pool of lights?