Flexduallyv2 Supports

Im using flexdually v2 to use second extruder for my pva support. But when i check support in the extruder 1 it still uses some of filament as support. Is there a way to have only support be used from extruder 2 only? Is there a setting im not seeing.

tia

What Cura are you using? I don’t have PVA as an option in the latest Cura 3.2.23 - it seems removed since Cura 21.08 for Flexydually V2