Mystery solved!!! Now A1 from IR543 will work for SwitchLinc. All I needed to do was to move to another wall outlet. Dimming, on and off are now working through A1; the macro from ActiveHome is not needed anymore.

Another question I want to ask, I have ActiveHome, Commander X, IR543; is there any way to send those SwitchLinc sequence with what I have? I can order a Maxi Controller but it will take several days to come in. I can't wait, life is too short!!! Thanks

Simon