I have the Narrative theme installed and I would like to keep my current product templates instead of the default one that comes with the theme. I have templates already created. Can I set the template for each product to be what I have versus the Narrative? When I publish the Narrative theme, will I need to import the product templates I want into the Narrative theme or will they be available still once the theme has switched?
Product templates depend on the theme published. Unless you manually recreate the template on the other theme then you will not be able to select it.
Let us know if you require additional information!