AJvK, calibre's Fetch Annotations doesn't work for Kindles beyond K3(Keyboard Kindle), and not always for those either. Plus it only works for mobi files, not azw3/kf8.
You can fetch annotations from the Voyage with the
Annotations plugin, but this uses My Clippings.txt, so you won't get last read locations since these are stored in the sidecar files (.mbp for mobi, .han for azw3)