Upgrading an iPhoto library to Photos has messed around with my 'Faces' library
I have recently purchased a new MacBook Pro which came with OS Sonoma 14.x; i've since updated that to Sequioa, 15.1
My previous Mac/s used Yosemite, and Sierra systems, and I have several iPhoto libraries stored on drives.
I noticed when I migrated my User data onto the new laptop it upgraded my System photo library and ended up altering a lot of my faces database such that it renamed several persons as another name such that that person is predominant now. I have to meticulously go through changing names back.
With my other saved iPhoto libraries which contain thousands of photos and hundreds of Faces, I do not want to have the same happen to these; what are my options? Can I have an older version of iPhoto installed onto my OS 15.1 Mac (legacy software?) I do have prior iLife installer disks that I may be able to extract it from. (May have a problem reading from disk though). I understand that we are trying to use Intel-based software on the new Silicon OS? I attempted to download iPhoto 9.X, which were only updates, and advised that I needed to install Rosetta to bridge the OS protocol issue?
My fears of incompatabilities are always confirmed whenever i'm faced with major hardware/software updates… technology never gets easier!
MacBook Pro 14″, macOS 15.1