Onkyo binding no more Zone 2

I had some issues with my OH2.1 after a backup/reinstall from OH2.0. Now I decided tot go for the snapshot build. From my two onkyo’s only one - the ‘unsupported’ one is found, and only one zone, while in my OH2.1 setup both are found with both zones.

Am I missing the point that new versions have more - but experimental - functionality while being backwards compatible or what am I doing wrong?

As my OH2.1 seems to be corrupted - i did a backup/restore from an OH2.0 openhabian with the kernel panic issue - I reinstalled OH2.1 to rebuild from scratch. I see the same issue with the onkyo-binding. Now also the volume settings through habpanel refuse service sigh