I had no idea that feature existed! I am a new user, part of the influx from Sumo, clearly need to read the help
The other place a re-scan the current program would help is when you are using the built in update check in one of the reported programs.
The main place this problem came up was with a development machine that has to have several old versions of Visual Studio installed, so I started with 87 programs reported as needing to be updated! That was a little daunting, especially since most of them just had to be excluded, since I need the old versions. Now things are more under control its much less of an issue, but thought it might be a nice helper for people.