Export PDF annotations to Scrivener (Bookends; DTP; Highlights)

Does anyone have suggestions for how to export PDF annotations from an external app (such as Bookends or Highlights, whatever) so that it is saved as a nesting file w/ index cards in Scrivener? There used to be a great script for this back when Sente was still around (sobs).

I have tried using the script to convert Bookends notes to OPML and then dragging those into Scrivener, but it’s super buggy and doesn’t look right.