Im ready to upgrade my machine from SW 2010 to 2011

Whats the best/most reliable procedure for this as Ive just been reading some installation info from my VAR & it says:

Make a note of the SolidWorks settings (File Locations etc) so that you can set up your upgraded installation as per the previous one. Note – it is NOT RECOMMENDED that you use the Copy Settings Wizard when upgrading major versions

Ive used the Copy Settings in the past with success so will it not work now?

Normally I copy the settings, backup my Toolbox, transfer my license, switch off Antivirus then uninstall solidworks (after logging on as administrator)

Is there any need to cleanup the registry manually etc? Seems a bit cumbersome/long winded having to do this