If the dialog for Import Corridor Setting doesn't come up, and you use Civil 3D 2022 then we recently published a hotfix for you.
The problem shows up for those that have Civil 3D 2022 and has installed the Civil 3D 2022.2 update. If that is the case for you, then install the hotfix that you can find on Naviate.com/Downloads.
Note that there are two different hotfixes, depending on if you have Naviate 2022.2 or Naviate 2022.3. Check your version by starting Naviate and use the command NVAbout. On the splash-screen you will see your installed version.
Then close down Civil 3D before installing the hotfix.