I’ve never used Vegas, but maybe someone else can help. It’s pretty hard to see what’s going on because the image is scaled down, but it’s possible that it won’t matter for someone familiar with the software.
edit: and your image is presumably from before you remove or mute the audio tracks, just moving clips around as you described earlier in your post. Are you certain that your audio and video cuts are in the same places? I can think of multiple reasons why that could have gone wrong. What’s harder to imagine is still having the audio if you really did remove those tracks.