Clicking the Auto button to update the timeRange is not recommended.
This can result in many more frames being referred to than expected, depending on
the total duration of the source media files.
Working with Motion and Shake
If you want to change the temporal position of clips after they are imported into Shake,
you should use the Time View tab.
Audio clips from the original QuickTime files are not imported into Shake.
Video timing changes you make in Shake can cause audio sync problems if you import
the finished Shake composite back into your original Final Cut Pro sequence.
Sending Media from Shake Back to Final Cut Pro
When you’ve finished working in the Shake script that was generated from
Final Cut Pro, you need to render the originally created FileOut node. The newly
rendered media file takes the place of the placeholder QuickTime file, ready for use by
the original Final Cut Pro project.
When you reopen the Final Cut Pro project file containing the original placeholder
QuickTime file, you’ll need to use the Reconnect Media command to relink the clip in
your sequence to the media that was rendered out of Shake.