I may not be understanding your problem correctly.
I'm guessing that you modify the metadata in the "Edit Metadata" window.
If so, I believe that the changes are saved to a separate file with the suffix ".opf"
The revised metadata is only written to the epub file when you send it to a device or use the "Save to Disk" command and only to the file that is added to the device or saved, not to the epub as it exists in the Calibre library.
|