Channel 1

In my IPC I have lost control of Chan. 1 (!). I have a cue opened in an editng window, hot on stage (film set). When I select chan. 1 and take it to zero the output still indicates 100%. There are no other playbacks running, there are no other editing windows open, the programmer isn't active. WTF. I'm being yelled at.
Comments
1) Select Channels 1 thru whatever
2) Hightlight
3) Backspace (deselects all fixtures)
4) First channel is still highlighted onstage even after you hit clear
Work around is cycling highlight? That's what it did this time.
Sorry, we went to lunch.
And what is the work around here? It is so not cool that a channel pops on its own.