Any setting do inside of the monitors OSD interface to "calibrate" it will stay in affect.
So this means tweaks to get the white point aligned and the light output set will still be vaild, but the the issue will be that the ICC color profile that will be used by color aware programs would be removed during a reformat.
How much it affects you monitor's color depends on how close your monitor was in hardware and if you are using ICC in a workflow with say a scanner /camera and printer.
Thanks, where is this ICC color profile located? Can I back it up and restore it for future reformat?
EDIT: Nevermind figured it out.