Annotations vs Annotations?

I would like to create a smart rule (or batch process) that 1) finds Notes in my custom metadata of PDFs and 2) moves each note to the Annotation field of the PDF, ideally using the default text template (with a backlink). Has anyone created or tried this? I am seeing something similar: https://discourse.devontechnologies.com/t/new-rtf-doc-from-selected-text-with-url-to-pdf/14512/1

Thanks!
Thanks!