If you put your tracks in a Group Folder and enable “Group Editing” this is supposed to permit multitrack free warp. It worked for me earler in a project when I was goofing off with temp tracks. I recorded the final acoustic guitar - L/R mono tracks + transducer = 3 tracks. The tracks were in a group folder with the feature enabled, but it failed. It only modified 1 track. Buggy crap.