Found it. In V1 you got a transition at 00:32:39:24 leading to no b-clip. If you remove this transition the EDL export works here.
The odd thing is, that if I make a new project, add a clip, split it, make a transition and delete the last clip, and EDL export still works… So it isn’t just a transition with no b-clip following the transition causing the error. I can’t see from the time line what the transition is transitioning to. It might be some generated clip?
On the track separation workflow, read this pdf: