Hey Annette,
Not sure if you've already found something, but we developed an app to do just this, it's called Xporter (https://apps.shopify.com/xporter-by-eshop-admin). We offer a 7 day free trial on all our plans, so feel free to try it out, at no risk. And if you can't get the template to be exactly what you want, please don't hesitate to give us a call, or send us an email, and we'd be happy to work with you to create the exact export for your needs.
Adam
