I run LR 5.6 on a MacBook Pro Retina (64 bit). When I Print to File (to prepare pictures to upload on the web, with border, watermark and defined size), the IPTC metadata info of the picture displays Filename:Copyright in the Copyright tag. I need to remove the filename. Tried out every setting/preference without success. Even exporting with minimum metadata, reimporting and printing to file ends up in the same result.