(Sancti) Castanas don't change Zephyr her tornados

[GreyVictory]

I used Zephyr + Sancti Castanas in the past for nice death from above action with strong tornados affected by the Sancti Castanas. I started using that combo after some time again today or at least tried. But the Sancti Castanas Explosions now don't effect the Tornados anymore. And entire 35minutes mission I tried getting them to hit the tornado. But like you would expect from me posting this here, didn't worked once.