Apple Logic Pro 9 - Manual (Page 513)

This moves the active comp to a new track, which is created below the take folder track.
This comp is no longer available in the original take folder.
Flattening and Merging Take Folders
You can flatten a take folder, which replaces the take folder with multiple regions that
represent the current comp selections. All take region sections not used in the current
comp are deleted.
513 Chapter 15 Editing Audio Take Recordings