Originally Posted by Rootman
You have to remember that changing the metadata in Calibre is JUST changing it in Calibre, that is it is becoming part of the DB. You need to CONVERT the file - even if it is to the same format to apply the metadata to the file and therefore make it available to Kindle.
Test it out on a COPY of a book first. I think you'll find that I am right.
something so simple(stupid)!