If you are interested in changing the paper type of all your products, or you would like to change the apparel type you are offering your customers, contact your CSM. We can support you on the change!
We don't have a feature for you to do it manually in bulk so you would need to do it one by one, until we develop an open solution, we can do the change internally for you.
Important Please, contact your Customer Success Manager for more details and we will do the change for you.