Importing a Photos Library into Another Photos Library: PowerPhotos vs Photos

A comparison of those aspects of a Photos library that can be copied from one Photos library into another Photos library with PowerPhotos vs Photos.

PowerPhotos                                  Photos

Albums ............................................................................... No Albums

Smart Albums merged as regular albums ..................... No Smart Albums

Captions ............................................................................. Captions

Keywords ........................................................................... Keywords

Descriptions ....................................................................... Descriptions

Titles ;................................................................................. Titles

Original images ................................................................. Original images

Edited images .................................................................... Edited images

Locations ........................................................................... Locations

Favorites ............................................................................ Favorites

People (faces & objects) ................................................... People (faces & objects)

Can detect and exclude duplicates ,,,,,.............................. Can detect and exclude duplicates                  

Neither method included projects. 

Both methods can import older iPhoto libraries into a Photos library when the iPhoto library couldn't be migrated into a Photos library. 

PowerPhotos 2 can import from an iCloud Photos library whereas Photos cannot - Import photos from another library in Photos on Mac - Apple Support.