Yes, you need to use the new Email Program.
The new Email Program only uses local assets to that program, so you would have to clone them in. Cheryl said they are working on some adjustments in the next quarter or so to fix some of the limitations.
If you want to test your emails in the webinar program, you can use the old Choice method, or you can clone the emails in, then nest the Email program into the Webinar. At least, I think you can do that....and it should bring in the tokens from the parent program. Try that to see if it works.