See post 32. It was not my installation, I was just trying to help so I do not have all the details. If I understood it correctly this was a display from last year that had some new props added which caused addresses to change which caused controllers to be out of sync and then I think there was a change to absolute addressing. All of it combined to mean that the xlights config and the controller configs did not match up, which is why we could still get to the controllers via ip address and even though the correct ip addresses were in xlights, the channel addresses were not matching.