See, that’s the problem. It’s hard to identify what it is that’s happening, because when I try to recreate it, it doesn’t happen. It only happens when I am speeding through an edit (I edit audiobooks, time is of the essence) and do something along the lines of clicking a certain way inside the highlighted selection of audio. (Actually, I have successfully recreated this a few times, by randomly clicking around the audio selection very quickly – double clicking may have something to do with this action being executed).
In order to solve this issue, I think I need somebody who is very savvy with mouse+key commands on WaveLab to infer what kind of command I could be engaging in while clicking a certain way in a highlighted audio selection. Because just clicking within the selection does, as you say, dissolve that selection. That’s what it is supposed to do, after all. It is only when I am clicking with the intent of changing the length of the audio highlight, or something of that nature, in the heat of the moment at work, when this command happens.
Thanks for the response!