How do you show these custom fields in the Quick Cart?

I'm using Vantage Theme.  I've searched for a template, section, or snippet that might be feeding the quick cart and the only thing I see is the product.quick.liquid.  In the product.quick.liquid the only render that I see is the product-json.

Somebody? Anybody?

How do you get the new property to show in the Quick View?  Customers are able to add the items to the cart without the required customization if they click on Quick View.