The search does not seem to be complete, e.g. this topic General Scene Rule for jsr223 is not in the search results yet it contains a link in the first line pointing to General best practices for maintainable rule and item arrangements
Also some links to emojis no longer seem to work, e.g. in this topic Apparently everyone can edit anyone's topic title - #6 by Larsen
I don’t know if some some search ‘n replace is possible over all topics. I only know discourse as a user, not as an admin.