I switched to Kobo readers and Calibre with DeDRM plugin. I was able to finally own all my past Amazon books.
ePub now supports storing your highlights. Have you been able to transfer your highlights and notes? This is an essential piece for me. 🧐
Couple of things to chew on there: - Books are fresh downloads from the Amazon account. - I have never highlighted or notated an ebook in my life. I'll see if I can mark something up and test it for you, though. Should be an easy enough question to answer.