This worked for me -- this is the process you follow even if you have a Virginia Invest Plan (Not prepaid) -- you get the option to list any VA 529 contributions, including for the Invest plan, under this option.
A note to TurboTax -- this is confusing for VA residents because it looks like this option is only for listing contributions to prepaid plans; the option below it, which looks like a more obvious choice for Invest participants, only refers to income from VA529 plans. I spent 40 minutes trying to figure this out. Not intuitive! Please update if possible. (3/4/18)
