I use Ventura on home Mac, but travel with a Mid 2014 MacBook Pro running Big Sur. If I copy the PhotosLibrary from Ventura to disk on the Big Sur laptop, the Photos 6 on Big Sur will not open the library if I double-click it.
The laptop is too old to update to Ventura, and I am afraid to even try to patch the mid-2014 MacBook Pro force it. I see in discussion of Migration Assistant seems to work only from older to newer versions. Is there a third party utility to migrate "backwards" or some other thing I could do other that export individual photos from the newer and import to the older?Unsupported Library
The library “Photos Library.photoslibrary” is from a newer version of Photos. Please upgrade Photos to open this library.