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Old 12-09-2016, 03:20 PM   #4
BetterRed
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Join Date: Mar 2012
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Quote:
Originally Posted by deadman36g View Post
Ok, is it possible if later I wanted to undo that option and make the file unchanged again? (i.e. restore orginal, or remove any embedded data from calibre)
If you're converting like-to-like (e.g. EPUB to EPUB) or using Polish books you could change the settings in Preferences->Tweaks->Save original file when converting/polishing from same format to same format to True.

Then when you convert EPUB to EPUB, or polish an EPUB, you will have an ORIGINAL_EPUB file. The right click menu on the ORIGINAL_EPUB in Book Details (afaik there is no other way) will have an option to Restore the ORIGINAL_EPUB format.

IIRC - if you do another EPUB to EPUB conversion or Polish it will do it on the ORIGINAL_EPUB. The feature is not intended to be used as a means to keep a 'safe' copy of the original format in perpetuity. Its purpose is to provide a means to undo the results of an unsatisfactory like-to-like conversion or polish. If the conversion or polish is acceptable it is assumed the user will remove the ORIGINAL_XXXX format.

BR
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