Note: The following document applies only to merchants that signed up prior to 04/12/2006 have access to the version 1 and 2 checkout flows.

No. Checkout Manager pages are published to an entirely different domain (order.store.yahoo.net ) than your existing checkout pages (order.store.yahoo.com).

Setting the test cookie allows you to place test orders from your existing store on your computer and upon clicking your order button you will be redirected to your custom checkout pages. Buyers can not access the new pages and your existing checkout pages will remain unaffected at the current URL.