Good question.
I think the safe answer for now is to assume that trizbort import is dead.
A dedicated visual map editor is coming directly to adventuron later this year, which is two way, so having a one way import probably would be more frustrating than it is liberating.
I invite you to use pen and paper then populate a table on your page whilst looking at your map on the screen in trizbort.
FROM, DIRECTION, TO
Next, inside adventuron, using control space, populate the connection {} section (see tutorial a animated GIFs as an example how it works).
It should take no more than 10 minutes to do it if you have the map in front of you in trizbort, but so sorry, assume this is manual for now (so that it doesn't become a bottleneck for you).
That said, I will see if there is a quick way I can fix the import if you mail the map to me, but no guarantees.
info@adventuron.io