Question: Albums are in backup library and photos in Photos library
I don't know how this happened, but I have wound up with most of my photos in the default backup library (Default Library backup.photoslibrary) without most of my albums defined and my albums defined in the Photos library (Photos Library.photoslibrary) without any pictures in them. What is the best solution? Should I try and combine the photos from one into the other? I would like to keep the album designations, which took many hours to create. Suggestions appreciated.
iMac, macOS Sierra (10.12.5)