I have used Calibre to classify several hundred books. During that process I put my own description of the book in the comment field. I have since "found" the download metadata function and have started replacing (I thought) the comments I had entered previously. However I have discovered that if I happen to click on the "Set metadata for the book from the selected format" the new metadata is replaced by my old data. How do I get rid of that old comment?
The same situation applies to the cover also.
Thank you
Mike