To: Nedro
I ran into this problem when I was working for Dad. Only later I found out that many others had the same problem. That inspired me to post the solution.
If you too need to have no audio, but need overlays, just do the following simple steps:
1. Produce the video with audio and add some blank content in the main bar.( For when you upload the video again, the time, for some reason, is different.)
2. Make a blank project, and upload and add the video you just made and put it in the main bar.
3. Cut the video to the time you want.
4. Produce it with "no audio."
5. Done, God bless.