Updating a computer with Device Installation Restrictions GPO applied loses all installed drivers

Question : Are you rewriting the (in this case) Nvidia driver with the one that is already on the desktop or are you detecting the device and simply sending latest upgrade ?  I researched this with Nvidia and for some reason their drivers also started forgetting my second display when I downloaded them in between builds. They have been working on this and at least the last 3 updates that came directly from them recognized my settings and re-applied them when the new driver was installed. The setting in question is the one that 'Activates all Displays' . It is located under 3D Settings when Configure SLI, Surround, Physx is selected when you right-click and open Nvidia Control Panel. After this is set Windows will open with all the displays being recognized and turned on.  If that checkbox does not get clicked then Windows will still recognize (in my case) the two GTX cards but only the first display will be Active. I suspect the driver is fine every time and even if there is a new one installed it is not likely to be an issue. So are we talking about a setting 'within' the driver that Windows does not pickup or a configuration file that gets written over when a new build comes in ?  Somehow I think Nvidia has figured this out with their driver updates but the install methodology may be different when applied by Microsoft.