Hi Jonathan,
I’ve just done this by exporting directly from the wp_postmeta table. In my case, they were for a specific post, so I exported post_id, meta_key, meta_value from wp_postmeta where the post_id was the post I wanted. I then changed the post_id in the export to be the post_id in my other site, and then inserted the values into the other database. Note, I specifically didn’t export meta_id as this is an auto-increment field.
Douglas
