Yes, it's in transition to new software. However, in order to not lose data, the archive stays live while the other stuff is worked on.
The user cp and members subdomain are an example of the new code, while the storyboarding is still the OLD stuff.
Unfortunately, Internet Explorer doesn't play nice with many sites, including this one. That has more to do with the fact that Microsoft thinks that we all have to design for that piece of shit browser. Where functions and things work fine in ANY other browser, and have all along.
I will never subscribe to the notion that I must design for "quirks" (i.e. software bugs) in a browser. That is ridiculous.