well, i tried.... and failed.
and i'm bummed out.
kindleworm, you were right.
initially i tried removing all the notes marks & highlights i had made on the book, from the "my clippings" file while still on the kindle. no go.
then i deleted the .MBP file, i still couldn't fool the Kindle.
as a last solution i deleted the book from the Kindle, re-downloaded a copy from my account and basically crossed my fingers. didn't work either!

next time, i'll try crossing my toes.
anyhoo, i still haven't tried to "fiddle" with the ebook but if i ever will, i'll share my adventures.
thanks to both of you!