[kevin4fly]

Uncheck the Preferences->Adding Books->Read metadata from file contents rather than file name, and then add the books to calibre. All the metadata except title and the authors can't be read into the books.

It is by design? From my perspective, all the metadata should be read into the books, while the title and the authors metadata should be read according to the file name. Please feel free to correct me if I am wrong. Thanks in advance.