The VO is stored in more places than CAS. Whatever modules show in NCS immediately after selecting your chassis should have FA_WRITE done to them. You'll also want to run a Process Car (make sure your MAN file is blank) to have any chance of that taking effect. Make sure you back up any other coding changes you've done since they'll likely be reset too.
'16 Cayman GT4 (delivery pics
Gone but not forgotten:
'11.75 M3 E92 Le Mans | Black Nov w/ Alum | 6MT (owned 5/2011 - 11/2015)