So, when the cloning feature first rolled out in Pressbooks, we tried cloning a book and found that some of the books metadata didn’t come with it (page attributions and GUIDs are examples of metadata that we add via different plugins). Has this been addressed yet?
Thanks!
Bryan
Right on! Thanks for the quick reply. Happy to see it on the roadmap. 
Yeah no prob. It’s not a lot of work, we just needed to get a bunch of other things out of the way first. You will need to register_meta() for all the meta keys you need to be cloneable (that puts them in the REST API).