Photos Drag & Drop failing

Hi PaulD_,

Thanks for using Apple Support Communities. It sounds like you’re having trouble organizing your photos on your Mac. I’m happy to help.

To start, I suggest making sure you’re running the latest macOS version:

How to update the software on your Mac - Apple Support

Then, try the steps in the article below:

Organize and find your photos - Apple Support

If you still can’t drag and drop photos, test to see if the issue persists in another user account:

How to test an issue in another user account on your Mac - Apple Support

Let me know the results.

Take care.

Have you considered creating a smart album for the year in question:

Then you can select all of the photos in the smart album and drag to the album of your choice. Or just use smart albums.