Tom, yes IPTC fields transfer to PS if I enter them in the raw files before opening the raw file in PS (with "open with" command).
My problem is: if I populate the IPTC fields in the C1 files, raw, psd or tiff, after I am done, like when I am done with a session and move the files to my catalog, then they do not transfer in PS.
Ideally, I should be very disciplined and enter them right away at the raw/processing stage...