exporting a model from Milkshape

[ExMortis]

I've made a custom model from part of a Naga Siren model. I wanted to make a Qiraji Slayer/Swarmguard

and it looks okay in Milkshape but once I export to OBJ and then convert to MDX the UV map is totally messed up. I've opened it in WarForger if I could fix it but I don't know what to do. It's just a ridiculous mess of lines.
I didn't give up and tried using the custom skin on the original model and rework it the same way (using only War3 ModelEditor). The only way I could make it complete is with triggered special effects to add wings and pants

 

[eubz]

Have you converted the geosets into editable mesh before exporting?

 

[ExMortis]

Now that you're saying: I tried to export it as one mesh instead separate models. But I can't put them together as geosets. Once I've tried putting more parts on a Nerubian model but ingame they didn't move with the model. It only worked with importing a head so far (I also use Model Editor for that.)