And that creates appropriate media entries with original, large, medium and square associated with that item, but still uses the default images in the thumbnail_display_urls.
How do I get it to use those generated images as the thumbnail display urls?
Apologies for letting this hang so long, I appreciate the response. Was putting out fires.
I ended up solving it. Turns out I had added a media item for the IIIF Presentation based off manifest and THEN ingested the url media. All I needed to do was reorder them so that the url media was first and that fixed the thumbnail links.