can't add or remove node to a group of another node

[sailmich]

I use newest beta on my Rpi2 with Z Stick.
I have two wall buttons from Philio to control blinds. Those are working for a while perfect. But a couple of weeks ago one starts to make trouble and I excluded him. Make a factory reset and included again. From now I can't add the blind to the wall switch.
In domoticz log I got
OpenZWave: added node: 57 (0x39) instance 0 in group: 2 of node: 59 (0x3b)
but in domoticz node management node 57 isn't there. Same if I try to remove a node from group of another node.
Any ideas how I can solve this issue?

[sailmich]

Answer to myself, next morning the node were added. It really took a long time. Seems I should have more patience.