These are two workflows to allow you to copy notes between Workflowy and Tinderbox (and vice versa).
The only thing that gets lost is any metadata you add to notes in Tinderbox (basically, any attributes which aren’t the basic note text field). But the hierarchy gets transferred over beautifully.
I wish this was a bit easier, with fewer steps, but I’m very happy as it is that it’s possible to have this fairly seamless transfer between the two applications. YMMV.