I have 2 main libraries of e-books that I use: My main library with all of my e-books and a library of mobi only format e-books that were published 2011-2012. I use the mobi only library for sharing with my sister who is very computer illiterate.
Is there a way to compare/sync the e-book metadata between the libraries so that it does not have to be done 2 times for each book initially and so that the books remain in sync from then on?