DVD Studio Pro 4: Updating rendered Final Cut Pro reference movies

You can import Final Cut Pro reference movies (those that are not self-contained) into your DVD Studio Pro projects, but if any part of the Final Cut Pro sequence requires rendering, you must render it before importing the movie.
Keep in mind that if you need to make a change to a rendered portion of the movie, you must render it again in Final Cut Pro, re-export the movie using the same name, then overwrite the previous reference file. When you go back to DVD Studio Pro, a dialog appears, noting that the movie has changed and that the DVD Studio Pro project has been updated to use the new movie.
This applies to any reference movie that you import into DVD Studio Pro 4 from Final Cut Pro 4, Final Cut Pro HD, or Final Cut Pro 5.