If you test two existing pages against each other, our plugin will use their original URLs when a visitor is on either page.
For example, let’s say you’re testing page A (https://example.com/contact/) versus page B (https://example.com/contact-2/), both pages being already published. If a visitor lands on either page, our plugin will assign them one variant and redirect the visitor to the appropriate URL. For instance, if the visitor lands on the /contact/ page and they’re supposed to see variant B, our plugin will redirect them to /contact-2/, and they’ll see the URL in the browser is now /contact-2/.
If you enable the setting “Use control URL in variants,” our plugin will still redirect the visitor from /contact/ to /contact-2/ when needed, because that’s how the browser can load the appropriate variant, but once the page has been served our plugin will rewrite the URL back to /contact/ (i.e. the “control URL”).