STEP files not updating in board (but update in some symbols)

I'm having this weird issue - I'm trying to add connector heights so I can verify things with the mechanical engineer so I've been adding step files to my existing parts and some of them are updating and some of them aren't.  I've been using the STEP mapping from the setup menu and when I set up the offsets and orientations then save and refresh the package symbols some of them update and some of them are still not visible in the 3D view. 

I've tried updating the individual packages, all of the packages, updating the STEP mapping data only and ignoring the FIXED property.  I see the mapping information in the element information but I still can't see the STEP files in the 3D view.

I'm confused as to what to do - are there any debug logs or anything I can see?  All of the STEP files (the ones that work and the ones that don't) are all in the same place, all of the mapping files are in the same place and so far as I can tell the metadata is where it should be.  The step files render fine in the step mapping views so I'm assuming they're understood properly in OrCAD.  What else should I look into?

Thanks!

Chris