How to migrate existing 1.0 quotes/subscriptions to 2.0?

We do this Product Catalog update to 2.0 within the live site. Plans and Addons of Legacy Product Catalog will become items and item price points in Latest Product Catalog.

So the other entities (Subscriptions, Invoices, etc.) in the live site will be unaffected and they will be linked to the corresponding price points in Latest Product Catalog. Click here to read more about migration steps for existing users.