Moving / Backing up/ Restoring backup of engine prime database

[mufasa]

How did you make the external back up?

Did you use Engine Prime to make it?

If you did then there is no official way to copy that back to new PC.

See this thread for inspiration

Move Engine Prime Library to External Drive

I wrote an article about relocating files here: Tutorial: Switching from macOS to Windows - rekordcloud It applies to your situation too, minus the OS switching of course. Yes you can simply scan for duplicates and save the duplicates to a new playlist where you can go through it manually.