From page 159 in manual.
When you begin to color correct using the Master Session, all corrections are automatically applied to the other conformed versions. This means that the Master Session is Batch Linked to all the other conformed versions. If you wish to create a different version of the color correction in another timeline, simply select the desired version, right mouse click on a thumbnail, and select ‘Batch Unlink.’ This conformed version will not share the same color corrections as the Master Session or any of the other
conformed versions. If you select ‘Batch Link,’ the corrections within this conformed version will revert to the corrections seen in the other conformed versions. Batches may also be copied using this right-click option.
Eric Rosen
Lightpress