Don't Make This ScreenFlow Mistake

This video is uploaded to emphasize one point: Do NOT copy a video snippet into another video until the first video has been saved. In this main video I wanted to add a bit more. So, I recorded some more footage, copied a snippet of the video and pasted it into the main video. I forgot to save the extra footage I had created. That created huge problems when I tried saving the main video. In this case, ten snippets of video went blank