Migrating new site to an existing plan?

Hi! I’d like to redesign the first project I created. Unfortunately, it’s already live and attached to a Webflow E-Commerce plan. How do I attach the new, rebuilt site to the existing hosting plan for the old site?

Thank you in advance!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Did you figure this out? I have the same problem!