Quote:
Originally Posted by Illyria
Yes, that's the way I was doing it. Thank you. I was used to doing it this way with my Cybook and for some reason with this device it works. But now I know how to avoid this problem.
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It is a reasonable expectation. I think the reason the Kobo does this is that it load details from the book and the TOC into its database. If you modify and replace the book, this can get out of sync and cause problems. The problems depend on what changes you make. If they are changes to the file structure or anything that affects the TOC, there can be problems. Generally, it just means that navigation via the TOC doesn't work and bookmarks might not work. If the changes are text changes, such as spelling, styles or layout of the text, or to the metadata, they should be OK.
The latest driver in calibre updates the file size in the database when a book is sent again. I frequently tweak the formatting of books I read, so this saved me from having to delete and send the book again. And I don't lose the bookmarks. I know a lot of other people do the same thing.