Quote:
Originally Posted by galaxyhub
my main libraries are all epub only on onedrive, convert as needed then delete the other formats. So batch editing of opf would be ideal to remove all the opf mess excepting dc elements and series name and index.
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One thing you might want to consider is moving your libraries to local storage. A library stored in the cloud is a disaster waiting to happen. You may get away with it for years and then hope you have a good backup. One recent thread is found at
Library management issues after editing metadata.
Also remember that when you save your epub to disk or send to a device, the metadata will be updated from calibre's metadata.opf file.