Is there any way to do this for all annotations at once, rather than one at a time?
Yes, you should find all of the bulk conversion tools you need in the
[b]Format/Convert/[/b] sub-menu. This currently only works per-document, so you will still need to run it a few times if you are trying to convert your entire draft, but that will at least be easier than one-by-one. The capability for doing more than one document at once (in Scrivenings mode) is planned for the future.
Thank you so much!!!