Just an update -- my attempt to mirror the I24 VIP Beta forums failed. I guess the cookies didn't work right. Of course, the official forums have a tendency to act funny with their cookies anyway, so it's not a big surprise to me. I'll try making another attempt at some point in the next few days, hopefully I'm just doing it wrong and can figure it out.
So at this point, I still don't have a way to archive anything behind a login.