How can I create a new version of a project in iMovie 10.0.3?

First of all, all my old projects are gone with the new upgrade. But I created a new video today that included a soundtrack, and I want to create a version without the soundtrack as it is a song I don't have the rights to and I'd like to post it. I can't find any way to save, copy, re-name - anything. I'm afraid if I take out the soundtrack it will replace the original. Anyone figure out how to do this?