Adding a camera cut track through sequencer scripting does not set the movie scene's camera cut track

When adding a camera cut track through sequencer scripting there is no way to set the camera cut track on the movie scene, which is how the add track menu determines if a new one can be added. This also appears to affect the shots track's thumbnails.

1. Download the attached python script
2. Run it in the editor
3. In the generated sequence open the shot from the shot track
4. Click on the add track menu

RESULT:

Despite already having a camera cut track, there is the option to add another one through the add track menu. There is no way to set the camera cut track on the movie scene through scripting either.