I'm using RoboHelp 2015. I have created a numbered listing using the numbered list icon. No problems. If I need to change the line to non numbered, I can click the numbered list button to remove the numbering and style, but the number isn't removed. Is there a way to fix this?
Try clicking to the right of the number and then use the backspace key.
Try using two paragraph styles; one formatted with a numbered list (List Number) and one without (List Comment). Assign the List Number paragraph style to the lines that you want numbered and assign the List Comment paragraph style to the lines that you don't.