Good morning. Thanks for responding.
I am running Mojave 10.14.6. (I upgraded to Catalina a few months ago, had trouble with critical software that didn’t accommodate the new operating system. So I downgraded back to Mojave and have had a variety of problems since, maybe related to the back and forth changes.)
I am running Photos 4.0 (346.7140).
I don’t know if I have the iCloud Library enabled in the library. (I searched for iCloud Library unsuccessfully.)
In Photos Preferences, I have “Download Originals to this Mac” checked, not “Optimize Mac Storage.” I have plenty of space on my mac.
I don’t remember where managed vs. referenced library info. resides. Sorry.
My library is located on my Mac drive.