Quote:
Originally Posted by PenguinCEO
The "custom" metadata concern the particular ordering of my epubs in my library, and are valid only on my pc and on my copy of calibre; they may contain informations that I do not want to share, informations that do not interest the public as they are not part of the book.
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If you copy a book, using Calibre right click on books, from the "Library 1" (with custom columns) to the "Library 2" (a clean library with no custom columns) the values of the custom columns are cleared for the book copied.
So no information (custom columns values) will be handled to library 2.
Books will have "calibre:user_metadata" (and the available options for each custom fields) but with empty values.
Non custom columns will have their values intact.
Not a pretty solution but an effective one to hide the values on each book to give to others.