Apple Final Cut Pro 5 - Manual (Page 423)

88 Part II Rough Editing
Sequences are independent of each other, so changes you make to the copied
sequence do not affect the original sequence or its rendered files.
Note: When you duplicate a sequence, all clips in the new sequence are affiliated with
the same master clips as the clips in the original version of the sequence.
Copying a Sequence Into Another Project
If you have more than one project file open in the Browser, you can copy a sequence
from one project and paste it into another project.
To copy a sequence from one project into another:
1 Select the sequence in the Browser.
2 Choose Edit > Copy (or press Command-C).
3 Open a new project and select its tab in the Browser.
4 Choose Edit > Paste (or press Command-V).
Important: When you copy a sequence from one project into another, the clips inside
the copied sequence become independent, and are not affiliated with any master clips.
For more information about master-affiliate clip relationships, see Volume IV, Chapter 4,
“Working With Master and Affiliate Clips.”
You can also copy a sequence into another project window by dragging.
To copy a sequence from one project to another by dragging:
1 Open the second project.
This project appears as another tab in the Browser.
2 Tear away the second project tab in the Browser to make it its own window.
3 Drag the sequence from the Browser in the second project window to the Browser in
the first project.
The copied sequence appears in your first project.