Get back those lost features in the "upgraded" AirPort Utility 6.x by installing and adding AirPort Utilty 5.6 on Mountain Lion.
This article will tell you how:
There is really only one "method" in the article.
Download AirPort Utility 5.6 as instructed to the Mac's desktop
Use Pacifist to unpack the installation package manually extracting the AirPort Utility 5.6 application..... since Apple's installer will not allow you to install the application as you normally would.
Once you have manually extracted the AirPort Utility 5.6 application on the desktop, you can manually drag it to the Utilities folder alongside AirPort Utility 6.x.
This is not supported by Apple, but it works fine for me and countless other users.....but no guarantees.
More info and another "method" can be found in this article if you do not want to use Pacifist:
I have not tried method 2, but the link has appeared numerous times on this forum with users posting back to say that it works fine.
Method 3.....if you have been using Time Machine to back up your Mac.....would be to go back in time to a point where AirPort Utility 5.6 was still on your Mac. Restore it to the desktop, manually rename it as AirPort Utility 5.6, then manually drag it to the Utilities folder. This works fine for me as well when I test it out.
Thanks a lot. I do have Time Machine. Hopefully it goes back that far. I had to start Time Machine over again a while back because of some disk error that cleared after using Disk Utility. If not, I will likely invest in Pacifist. I've seen quite a few restorations of older apps where the person used Pacifist. I'd like to go back to iTunes 10 from iTunes 11 because it was downgraded too-no multiple window support any more....very disturbing for people with big libraries and lots of Playlists.
Again thanks a lot for the help. This isn't the first time you've helped me. If I remember right, I think you helped me with transitioning from iDisk.