Been working my wife's mother's petition through the system, it is a simple matter of emailing the I-864, doing so automatically opts in to the electronic process, NVC shortly sent out an email with the new GZO number, no need to inform them.
http://travel.state...._documents.html(Method 2: Choice of processing)
It does look like they shuffled the order of things a little on the NVC site to streamline it a little.
- Choose agent
- Pay both fees
- Submit DS-260
- Collect Notarial Docs
- Collect Financials (I-864)
- Mail or Email