Well I’ve found a way giving similar result with less hassle. When you finish a song (and you saved it already) delete all content on all tracks (Ctrl A for selecting and Del). Then select all tracks. Make an Export selected tracks in File menu. When in your new song you open Import Track archive, then you can select one track or more. If you select the track and it’s group track and send effect track the routing will work. So you have to spend about less then one minute extra time upon finishing the song and basically the same functionality can be achieved. Maybe some macro could be written for it.