In reply to a reply by David Shanske
No worries, David. I think we had some exchanges about it at the time (2021) in the IndieWeb IRC chat. A migration tool would be useful for others I’m sure. In my case, I used the opportunity to style things differently too. So it wasn’t just a migration out of the plugin, but also additional changes to how I do things in my site. In the end it was less work than I had dreaded beforehand to move over 800 or so postings.
I do have one other oddity since I removed the plugin: post previews are empty, except for the title. Probably I’ve done something to the Sempress theme that causes this. Will explore. Update: this must have been something else, I can’t replicate it now.