You cant export morps within a .obj file from poser so you have to export each morph separatedly or buy this :

**CR2 Loadder
http://www.greenbriarstudio.com/3D/cr2load.htm

**and if you want to retain UVs from .obj files u export from Lightwave go into the "Surface editor", select all the surfaces you want to retain UVs whn u export em into .obj and clik on the [T] button in "Color" section, once in that window in "Projection" slect "UV" and then click "Use texture" too go back, so each surface with its correct projection will retain UV when u export em to .obj.