If you define a book collection without a footer, and you define a book within that collection as having a footer, SAB puts a single footer line in the configuration for the book and no footer entry for the book collection. The config.js file that results after that is processed contains an entry for the book, but now also has the same entry for the book collection level. The book collection entry should not be present.
If you define a book collection without a footer, and you define a book within that collection as having a footer, SAB puts a single footer line in the configuration for the book and no footer entry for the book collection. The config.js file that results after that is processed contains an entry for the book, but now also has the same entry for the book collection level. The book collection entry should not be present.