Conversion of mobi files to embp file format

As far as we know, there doesn't seem to exist any way how conversion or export between MOBI ebook (.mobi) and MOBI encrypted auxiliary file (.embp) is possible. These files are not ebooks, just set of saved changes and metadata made by the user whilst viewing the ebook, like annotations, corrections, marks etc, which makes mobi to embp conversion extremely unlikely.

Open MOBI file    Open EMBP file