LociOiling Lv 1
I've seen this issue in other spots, but didn't manage to track it down until just now.
A 2019 news post from bkoep https://fold.it/forum/news/science-chat-transcript-news mentions a science chat transcript at https://fold.it/portal/node/2007679, but this address gets an "Old/Invalid resource route" error.
The referenced page still exists on the old site: https://old.fold.it/portal/node/2007679.
A similar problem occurs in a 2016 post from inkykatz https://fold.it/forum/news/may-science-chat-announced, which references previous chats at http://fold.it/portal/chats, which also gets the "Old/Invalid" error.
Back in Old Town, https://old.fold.it/portal/chats is still going strong.
It seems like pages with just portal or portal/node in the URL weren't included in the list of things to be ported. The science and developer chats are one casualty, but there are probably others. For example, I thought there was a translation upload page, but I can't find it on the new or the old sites. Maybe it was removed from the old site, since it hadn't worked in years.
Some things also look broken on the old website. For example, https://old.fold.it/portal/node/2007659 mentions 10 comments, but there doesn't seem to be a way to display the comments.