When the installer identifies incompatible apps, extensions, etc. it will place them in an appropriately folder at the boot drive root or sometimes on the desktop. Unfortunately, I don't recall the folder's name at the moment. If it is there it is only for our information as the app or whatever will not run on the new system or in some cases may even damage the new system if you run it.
If we knew what it was we were doing, it wouldn't be called research, would it?
