Quote:
Originally Posted by Tex2002ans
I think it may be used by some reading systems for highlights.
(Because I've had books where I've cleaned up/converted, forgot to change UUID, and the highlights carry over in all the wrong locations. After copying/pasting in new info, the old highlights disappeared.)
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If that's true, surely it's using the epub's unique-id and not some random uuid included in the metadata being used, no? I would think the same issue would manifest regardless of what unique-id was used (uuid or ISBN or whathaveyou). In other words, there may be consequences for ANY unique-id value you forget to change/update.