Thanks for that. I’ve got 30 on this site (different from the site discussed here) with more than 490 characters. I’m not clear why the remap has this problem. Oh! Is it because this table is getting populated when the posts are rebaked? If that’s it, isn’t it a bug if sticking a URL with >500 characters in a post causes this error? Should there be some error checking that catches it?
Tagging @falco since he was involved in the other topic about this.