But poser does export .obj's as morph targets see image. just load your figure then go to file>Export>Wavefront OBJ... click ok on the next window, on the Hiearchy selection uncheck all and check back the part you want to edit for example head, click ok name your file and then you'll get the pop up in this image de-select all and check As Morph Target(no world transformation) and you should have OBJ file ready. now it all depepnds on what program you are trying to morph in.