We are detailing a stair and platform for a building. We have the model complete, and are working on getting all the parts onto sheets. I've gone through the numbering and setting up MP and SP sheets. The only problem is that the handrails are not being given numbers other than their #internal2 number, and are not being placed on the SP sheets to update the original number. What are we doing wrong to not allow the handrails to be placed on sheets with their proper numbers?