You sure? One would expect them to have accepted your new P4 mapping or, to have retained the original P3 mapping. No texture at all is an unusual trick. For confirmation, you could export an eyeball obj from a scene and open it alone in UVMapper to check its mapping. If it doesn't announce "the obj has no UV coordinates...blah..blah..." then its still got some kind of mapping. Were you using UVMapper to convert the figure's mapping btw?