Associations and how they work?

Personally I didn’t report or ask for support as I was testing the very association itself. I thought I’m doing something wrong. But when same thing got functioning on two different devices I realized there got to be something behind it. Unfortunately I already rearranged the previous buggy setup so I cannot contact support…

In my initial post I was refering to single to double switch direction. Then I tried double to single (no multi device in this direction), still didn’t work. I’m quit puzzled what went wrong with the test. Possibly FGS-223 driver?