How do I delete old channels out of cues?

I have this one show I do every year. I keep all the old cues just in case they redo a segment. One year, channels were different so I have all of these old channels stuck in current cues. I've tried taking them to zero, updating, then going into blind and pressing at enter. But, they still remain in the cue with the dash through the tombstone. Any thoughts on deleting these channels out of the cues? They are unpatched as well.

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