So, I imported my reference and then imported the retopology (retopo>import) so I could fix some details I wasnt able to do in zbrush with proyect. I imported half of the item so I could apply the symetry. I closed the proyect and re-opened it and the problem is that both sides look dull; both sides have the same color and if I export that object to Maya, those parts are separated, I have to merge each vertex together.
Help