Go Dave! Go Dave! Go Dave!
SUCCESS!!!! Thanks, guys!
Not only do I now have a .CSV file of ALL the CVs I have configured on my best-configured loco, I can use the PR3 and JMRI DecoderPro to import that spreadsheet to the next loco and
write all the CVs at once. What a time to be alive! Who knew when I bought the PR3 some 7 years ago I'd be finding new uses for it...