This is quite an odd problem and it may be theme related, but here goes:
This week I restored a number of posts that were previously missing and redirects were set up to deal with external links to the relevant pages.
I restored the pages and deleted the redirects. The incoming links now go back to the original restored pages so do any internal links pointing to these posts from the main body copy on other posts.
However, and next and last post links to these pages still redirect four days after the redirects were deleted. If it is relevant, I’m using the Edition theme.
At a guess I’d say either these next and last links are cached… or they are generated at some point and not dynamically updated.
Is there a way to clear the cache or to regenerate the relevant links?
I wondered if editing the posts and resaving might refresh the links, but it doesn’t.
Here’s an example. The back link on this page should connect to
https://billbennett.co.nz/microsoft-surface-sales-disappoint/
but it redirects to
https://billbennett.co.nz/pandemic-tablet-boom-rolls-over-into-2021/