Legacy software
My wife has a Mac running the Mojave OS. She uses two open source apps. When I run the "file" command in a terminal regarding each app, I'm told that it's a 64-bit app. For one of the two apps, that's confirmed when I check "Applications" under "System Information". However, the other app isn't even listed in "Applications". Then, when I check "Legacy Software" under "System Information", both apps are listed.
I understand that, after the next major OS upgrade, legacy software won't run. I'm afraid that means that my wife's two apps won't run, nonetheless though they're both 64-bit apps.
Why are both apps listed in "Legacy Software"?
MacBook Air 13", 10.14