Ah, I see:
I had misinterpreted, "you can safely start new website using version 1 and migrate to version 2 afterwards." to mean, "it is possible to..." when in reality it seems like it means you must start a new website in version 1 and then upgrade to version 2.
Sorry! I'm just really excited to see what v2 looks like. Thank you for all your hard work, MAD!!