Quote - I am assuming that you are making a custom morph.

Keep in mind that if you change the vertex count, Poser will not accept the morph. You will get a notification of this when you try to import it.

If the morph takes, then no, you won't have to remap the .obj.

Thanks for the reply and info Rokket! Custom Morph, yes thats it. Sorry for my lack of terminology. I will let you know how it turns out. Thanks again