When I've been put in this situation, I highlite the section I want, (including multiple tracks) and then 'copy' it.
Then I go to the next blank track and paste it at the beginning of the track.
This gives me the 'song' on its own tracks.

Then I use 'Track-erase' to get rid of the original tracks and 'Save As' another name.
Then I open the original again and do it for the next section.
Easy and quick. Just have to be careful to never save it over the original, so I make a backup copy of it before ever starting into this routine.

You can copy/paste multiple tracks and erase multiple tracks by making sure they are selected. So you can select the region on one track, then click the track numbers while holding CTRL key down to select the other tracks .. or hold shift and click the bottom track to select all in between.
Knowing a few keyboard shortcuts help make quick work of this.

I do not work here, but the benefits are still awesome
Make your sound your own!