Hi Tarna--thanks for the update!
I've created a few pages since the migration. It's not difficult, just a little extra time consuming. I hope a future update includes an opportunity to create a template to encourage both seasoned and new vintage pattern lovers to contribute to this amazing wiki.
Your response was very helpful! I followed what you did and created Simplicity 7992 just now. (I didn't add a vendor link because I haven't listed it for sale yet). It looks okay-ish for now, but I'm sure you're right--the admins are on it and will help us!
I had issues trying to add my vendor links this evening until about 8:45 PM EST... Then I noticed a new message: "We have migrated your community and all of its content onto new wiki software."
It looks nice! No humongous changes--everything just looks freshened up and clean. I was able to add my vendor links.
The only challenge thus far is my attempt to create a new page. I'm fairly tech-literate, but it seems as though there's no template to use to create a new page.