Hello,
You don't extract or save your edited project, you need to render it in the Produce window.
Once you are done editing in the Motion Tracker, close that window, use the controls under the preview window to preview it...to ensure it's what you want. Then click on the "Produce" button at the top of the window. You can produce the video in the same format your original video is in, in a new format, or you can produce it directly to YouTube.
Dave