Trying to find photos in iPhotos (time machine) before Mac crashed - on Time
In March our original Mac hard-drive crashed. We were running time machine - and as of today I still have files on time machine going back to March. We chose to buy a new Mac and did, When I started the new Mac up I started from Time machine to the few days before the crash, all the photos from "Photos" did not transfer over, although all other files, documents and stuff did. We had some photos from September '19 through February '20 in the "Photos" application that we are missing and want to recover.
I am trying to recover those photos from the oldest timeamchine backup I have. I have tried to use the directions for the iPhoto library upgrader (https://support.apple.com/en-us/HT202358) and that doesn't seem to work. When I open the "Photos" app from March 2020 in time machine I get a message that the version is too old.
I am not the most computer savvy - but can follow step by step directions.
We have the time machine file on a new external with the new Mac - and I also have it on the original external which is now with the old Mac that I put a new hard drive into. Both Macs are running the newest version of OS. macOS Catalina 10.15.6
Please help!
iMac 21.5″, macOS 10.14