This summer, Amazon changed their Kindle highlights page. As a result, RobTrew’s script for importing clipping notes no longer works.
Has anyone developed a new script that works with the updated read.amazon.com/notebook interface?
None that I’m aware of. Maybe hunt down Rob and see if he has done anything with it. 
The web code on those pages looks fairly deeply obfuscated these days – hard to tell whether circumvention of web-scraping is a design goal or a side-effect.
( The broad picture seems to be that any notes which we take in that format or medium become more their property than ours )
I am impressed to see, however, that the 14,000+ lines of JS used by this:
do seem to work.
Well, that’s something you don’t see every day 