Merging clips in multiple tracks at once

Why can't you merge clips in different tracks with only one command? I don't mean mixing different tracks into a new file. What I mean is, for instance, I have two clips in each track and I want to make it one single merged clip in each track. If I select them all and hit Ctrl+K, Audition says it's not able to merge clips not in the same track. I have to make a selection in a single track, merge it and then move to next track and so on. That's annoying. I don't want to merge clips vertically, I want to select clips and merge them horizontally regardless of how many track I select. Is there already a way to do that? If not, there should be.