When you output from a Batch FX output node to the timeline, you can commit the RGB results (BFX) or the matte results (BFXa).You can commit Batch FX imported from another application. Any soft effects on the timeline are preserved when you commit the Batch setups.
If you committed RGB results, the BFX element is committed. If you committed matte results, the BFXa element is committed into a container.