Change the position of mixer group tracks?

In one project i have two grouptracks in my mixer (reverb and compression).
But i added them in the wrong order. I.e. I would like to change the order on these channels.(compression and then reverb).
Is this possible or do I have to delete them and insert them again in the right order?
Couldn´t find anything in the manual.(elements).

If you have set the mixer to follow the arranger, you can move them in the arranger and the track order will follow in the mixer.
It would be nice if we could move the channels around in the mixer, but it is not possible yet.

Thanx !