Threads not showing correctly

I have a part with rectangular slots in them and tapped holes coming at 90° to another edge.  These are both "smart features" of a punch that gets inserted into the block at the assembly.  The taps are all "through all" holes but some (why some?) do not show.  Attached is the part if you want to  take a look at it.  Any thoughts?

Thanks, Rob

SolidworksDrawings And Detailing