I am running PM 5, build 15419 (aa634dd). My OS is Apple Mavericks 10.9.2.
I ingest in the usual PM way. I have checked Apply IPTC Stationary Pad. I rename as Location_{datesort}_{foldernum}_{frame4}
This is all as I normally do this. I have ingested a card from a D800, making no change to any of the settings, and the IPTC information is there as normal.
Preview shows the normal information for both rats and nefs.
I find that I can see the IPTC Stationary Pad applied on ingest after conversion of the raf to a jpeg (without specifically attaching it to the jpeg), so it is being attached to the raf, but I cannot display it.