The question is that. I have several books in different formats, to try them, and when I import to Calibre (where I have the preferences to put in a single folder those of the same author and title), each one is of the author but changed name, or separate title, or join with the author name. I change metadata for each one with the same data and they are uniform. But how Can I do to join the files in a single folder? If I copy a single folder directly and start Calibre, does not find the new files. Any ideas?
