The advisor writes itself a registry key which loads the report it produced at first run. The assumption is that the hardware and software configuration is hardly likely to have changed.
I suggest that you go ahead with your upgrade. Unless there were any critical incompatibility in the hardware and software configuration you will be OK - you can sort out any minor driver problems after installation. The Windows 8 installer will want to go online to look for updates when it runs, and you should say 'yes' when it asks for permission to do that.