Too many photo and iPhoto libraries:
If when trying to open one of three photo libraries I get a message that a 35.44 GB documents file I have on my iMac called iPhoto Library.migratedphotolibrary, indicating its contents was migrated to my 34.84 GB file called Photos Library.photoslibrary, can I just trash the migrated one without loosing any photos?
And I have a 3rd file, called iPhoto Library.photoslibrary that's 30.91 GB and is essentially all the same photos as in the first two above. So how do I get safely to having just one Photos Library, with everything in it, without having to go through and check the thousands of photos are all captured in the Photos Library?
Thank you,
iMac 27″, macOS 10.15