I dropped a bit of a clanger yesterday.
I migrated my Calibre install to a new laptop a while back. I then added a load more books.
Yesterday I purchased some new books (30-40) and put them in my Calibre library - on the old PC

and set up all the metadata for them
Is there a simple way to migrate those 30-40 books to my new install with their metadata or do I just need to add them to the correct PC and set them all up all over again?