Iis7 changed the physical path for the site, but the site remains the same. How to restart the site?

Question

IIS

On the server is the site blabla.com. We decided to try out the new functionality. The new site was posted on blabla.com:40. How to make it so that when we type blabla.com, what is in the blabla.com:40 folder opens. At the same time, the physical content of the old site must be preserved so that you can switch back? I just changed the physical path in the settings of the blabla.com site, but it still displays the old site.

Answer 1

restart iis

Answer 2

What port does blabla.com have? In theory, should be 80 if the default.

Answer 3

And iis restarted, and blabla.com:40 stopped. Nothing helps