Re-consolidating a book's various formats back in one folder subtree?
I have copies of a given book in different formats made by calibre some years ago but now dispersed in different folders on different devices. I now want to consolidate them back in my new calibre library under the usual folder tree system.
Just dragging the various ebook copies into the only existing Calibre Library>this Author> Book(s) folder doesn't work. Is there a standard, trustworthy way to do this consolidation, please?
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