Thanks, but no, it didn't help.
What helped was I went to my library backup folder, found another one with the same date on it, plugged in my cloned HD, opened this other backup, and VOILA! THERE was EVERYTHING. Seems the clone was really a clone, and somehow I'd fiddled with the library backup. Don't know how this happened, but I am SOOO Grateful I got all my 22K photos back!
Thanks for your concern, for sure!
Thank you for the update and I am glad that you found your images.
Please feel free to contact us back for any further queries.