ok I have a model in blender that I have textured in blender then i export to zbrush but how do i texture it in the same way it was textured in blender not because of the texture but i need to make a tangent map so i need the seems and the uv unwrap to work.
Export your model to the OBJ format. Zbrush needs BMP and JPG textures. The UV maps will all be exported too. Zbrush can only have 1 texture per mesh.