I know this is Old But in case anyone else stumbles on to this thread here is a fix when your done converting the mesh into a Nif & you have added the BSLightingShaderProperties. Click the NiTriShape tree, then Right Click on the BSDismemberSkinInstance & go to Block, Convert, Ni... & NiSkinInstance & do that for every Mesh's BSDismemberSkinInstance for that armor & that will allow the item to be visible ingame. this works when converting armors using Blender. My Tutorial---> http://www.loverslab.com/topic/22771-skyrim-blender-armor-conversion-tutorial-update/