Photos XMP not used on import
If you export unmodified originals with XMP sidecar files, and then import into another photo library, the XMP files are not used and you lose title, description, and keywords. You also lose location data if it isn’t exported in the EXIF by Photos for some reason.
How do I get the Photos app to use the XMP files that it creates on export?
iMac 27″, macOS 11.2