It seems the root cause was the grouping and also the X.Y group numbering. Old controller was on node 1 and all device lifeline grouped to node 1. I followed this thread: https://www.domoticz.com/forum/viewtopic.php?f=24&t=29715#p225812 And just removed all false node IDs, and set my controller's ID ...

Hello, I was looking for everywhere to get the answer but so far I didnt find it. Sorry in advance if such a situation is solved somewhere else... I was running my house since 2016 with Domoticz + Razberry GPIO board (gen3) + RPi2 and have around 30+ devices, icluding blinds controller in wall ...