Hi, Ludo, I've tested the import 3DS function of OFW3 with a face, I've exported the 001 part as .obj, then edited it with Rhino, saving as .3ds file, then re-importing with OFW3 and after vertex writing, the proccedure of re.writing works fine, it does similar work than OEdit Rhino Points importation, but, sadly, it looks like the problem with the vertex order still there man, I show you some picks.
The face model before to be Vertex Writed
The face model after to be Vertex Writed
I hope you can find an algoritm in order to solve the problem.
I'm not even a intermediate programer, but in excel, after Rhino .txt points exportation, I've noticed that Rhino does it increasing the X axis value, so, I exported the original .o file to Rhino points with OEdit, numbered it from 1 in front, then order it according the X axis increasing value and obtaining a template of original order, after Rhino edition, exporting it as .txt, inserting next to the numbered template, I reordered it according to the first column (the one cantaining the number of each vertex) from 1 in front, and get a better result, not perfect because if for example the original .txt file has:
Vertex N° X Y Z
1 -12.2 0.23 2.15
2 -12.0 1.09 4.15
3 -11.98 3.76 -0.12
The point number 2, after edition has for example -8.12 in X axis value, the order of exportation in Rhino poins is diferent than the one in the original file, so in shortly, the method works just for minimal edition