But how to convert to the mapsonus format?

Well, how would you have converted directly? I assume by writing a script, and again, you'd still be writing a script.

Reserved04, 03 02 and 01 look like they might be UTM coordinates (meters north and east of a zone boundary point), so you could compute meters to next turn by completing the triangle (they're effectively points on a grid).

Someone previously posted a script to convert some format to mapsonus. You can probably use it as an example of what to do. I'm going to have to search, I don't have a copy laying around to look at.