Apple Final Cut Pro 6 - Manual (Page 1352)

Chapter 27 Color Correction 567
III
“Copy From” Rule
If the current clip has multiple filters and you’re copying from a clip with multiple filters,
Final Cut Pro copies from a filter with the same index number as the current one being
adjusted, if possible. For example, if the previous clip has three filters, and the current clip
has three filters, clicking the Copy From 1st Clip Back button in the Color Corrector-3 tab
copies the settings from the third color correction filter in the previous clip.
If the previous clip doesn’t have the same number of filters, the Copy From buttons
copy settings from the first available color correction filter that matches the type of the
current one. If there are no color correction filters in the previous clips, these buttons
are dimmed.
Copy From
1st Clip Back
button
Current clip
Previous clip