Final Cut Studio - Copying and Pasting
These tips control on which track you copy and paste a clip. It isn't obvious.
Keep these tips in mind when copying and pasting in Final Cut Pro:
If you copy a clip in the Viewer, or Browser, and paste it into the Timeline, the Patch Panel on the left side of the Timeline controls which track the clip goes to.
If you copy a clip on the Timeline and paste it back into the Timeline, FCP pastes it to the same track from which it was copied. To paste it to a different track, change the Auto-Select buttons. The clip now goes to the lowest-numbered track who's Auto-Select button is dark.