To: greggustin
Dear user,
Unfortunately it is not possible to save a part of edited video onto the timeline.
However you can try to save the part of the video into a small project and then, creating the new project merge it with the new one: when AVS Video Editor is launched a project window will open - right click on the project you need to merge - choose Merge projects.
Please let me know if I can be of any further assistance to you.
Kind regards