Thanks Gil.
Your answer made me take a closer look at why I was having issues. I had multiple timing track grid lines displayed. I thought I was selecting a single cell when I went to paste the copied cells but I had the wrong timing track active.
This leads me to another question, is there a way to customize the color of the timing tracks? I like having the different grid lines visible. But it would be nice to have a way to differentiate the active lines.
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