I have two subassembly and I need to transfer tap holes locations from one subassembly to the other subassembly, so that I can create thru hole on that.

I see a youtube video http://www.youtube.com/watch?v=XSncAVqfuYI      which exactly what I need

However, I could not reproduce exactly what the youtube video show. I can see the highlight on the hole when I touch the taphole, but I don't see any projection from one assembly to the other one

Note I have tried to specificly turned on the "snap-on>center" by   "Menu. Click Tools, Relations, Quick Snaps.-> center"

Please help . Thanks