Well - here is something very strange. Current setup: I have two 2477S switches - each are in a "two way" with an I3 Paddle (each switch is in its own 2 way - so two separate circuits). So each has a scene where both are controllers (the load is connected to the I3 in each case, with the 2477S being the "distant" on/off). (its basically two rows of lights across a basement rec room - each row controlled by each 2 way setup). All worked perfectly. I later decided to add a 2487S keypad at the top of the basement stairs - and I wanted one of the buttons to be able to turn on and off the rec room lights (both rows) - simple enough. I realized that this would potentially have issues with keeping things "in-sync" - so I have a couple of programs that monitor all this and make sure the LED's etc. all stay in alignment. In addition I created a scene where I added the keypad linc button as a controller - and all the other devices (2477S and I3 paddles) as responders in this scene - so the button at the top of the stairs would directly turn on/off all the lights in the rec room and control all the other devices (the individual devices if switched on or off would only impact the button at the top of the stairs via the programs mentioned earlier). When I added the I3 Paddles - all good - everything still worked (except the 2477S switches did not appear "on" - until the programs monitoring status picked it up). I also wanted to add the 2477S switches so they would all respond instantly as appropriate. So here is where it got weird. Everything was working fine until I added the 2477S devices to this new "key pad linc all on/off" scene as responders - when I did this - the individual 2477S switches would no longer operate the lights themselves directly (the I3 paddles continued to operate as they have the load connected of course). I could click on and off the 2477S switches - and no response from the lights. I tried "restoring" each device - this had no effect. The thing that worked - I had to remove the 2477S devices from their original scenes with the I3 Paddles - and then re-add them to those scenes. When I did that they all worked again. So my question is this - has anyone had this issues where when you add a device to a scene - it suddenly stops another scene from operating (and even the retore function does not correct)? Would be interested in any feedback - also - if this happens to anyone else - then hopefully this will provide guidance as to how to correct (note that I only found out about this when other folks in my family complained that the switches were not working......... and I then started to scratch my head about what could be the issue). Thanks!