I am working on migrating a website that was built with CPT UI & 'Advanced Custom Fields.'
The intent is a library of translated books, and the custom taxonomy from these tools permitted the books to be created with enough fields for classification (ISBN + OCLC; Author + Translator; Original Publish Date + Translated Publish Date; etc.).
Problem is, I can't get that data to export. Other custom things exist in the WP export tool, but not the Books one (or Links, but there aren't 300 of those to move around).
Long question short ... where else can I check for those Books to export with WP tools?