Quote:
Originally Posted by tomsem
I was talking only about imported books. I doubt I have any DRM free purchases from Apple.
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As am I.
Dragging an epub document into books on the Mac.
At some later time dragging that book out of books to a folder or the desktop.
The book is no longer a standard epub.
The modification appears to occur when the book is synced (uploaded) to iCloud. The change taking place on the source Books app.
There are some independent readers out there that will read the modified Books file, and other “damaged” epub files. However most will not.