Hi,
I just noticed, but when Calibre exports pdf files it disregards pdf conventions. For example in in author it will write "John Doe & Jane Doe" instead of John Doe; Jane Doe;
Also, it will duplicate entries from those that already exist in the pdf. This confuses me, because if Calibre can read those entries to import data, why does it need to create it's own copy of metadata entries in the file, adding extra weight to it.
In addition, why does it need to add custom field metadata to the file if custom filed is left blank.
