Thanks, Kirk! Your support here is just fabuluous. I couldn't have called a support line and gotten a quicker answer.
I configured the preferences exactly per your example, to the extent that I could in Windows. It worked.
I am new to this IPTC stuff. After configuring my preferences per the above, I see, by deleting the sidecar, that it is not necessary to preserve the rating, at least for an NX edit. Could you explain, in a general sense, why I would want to go to the effort to preserve these sidecars? It will take additional effort and thought over time as files are migrated here and there. I understand that it forms some sort of "backup" to the embedded metadata, but beyond that I'm new at this.
Thanks,
Neil