As a user on Academia, I can follow the link to the original questions migrated from the failed Open Science site, such as this question. From there, I can click through to the main Open Science page, and I'm redirected to area51. However, if I go to Help → Meta, I get an Error 404, Page not found — the system is trying to lookup the Open Science Meta on area51 which, naturally, does not exist.
This will be fixed as of build 374 (Area 51 only). Basically
/proposals/lookup will strip off
meta. from the front of the host name before the lookup happens.