ah well, my answer was more about future new tracks, just start the other way round.

Has 2 the ones u have jus 2 renders of the main loop and its variations (a bit like using the solo, the locators and the export audio mix down in cubase) of each track. Then 4 each of the tracks u add'em vertically so that when u activate a loop it mutes the one on top or the bottom... this might b a bit of a pain... but I guess u only have a bout 1-2 tracks 2 work on...

Z