Is this through a Direct PC install or through an Updater? I don't recall losing any settings, except possibly the yearly rainfall amount which can be restored through Weatherlink, when doing an upgrade via the Direct PC install method. I also don't recall having to pull the power from the console to reset it either.
It would be a good idea to copy down your location, elevation, and other data as chief-david suggested, but I don't think it will be needed.