Titan Void Shields wrote:Titans are protected by specialised void shield generators, near-impenetrable barriers of force projected out at a distance from their hulls in layers, and designed to deflect and absorb the impact of high energy attacks and missiles against them. In game terms, Titan void shields are represented by a unique kind of saving throw which the controlling player can opt to use instead of their normal save or invulnerable save against any form of attack except from weapons with the Melee type. Like invulnerable saves, Titan void shield saves are unaffected by the AP of an attack, but unlike invulnerable saves they may also be used to negate mortal wounds. In this case however, roll one dice for each mortal wound that has been inflicted on the Titan, with the mortal wound being ignored if the save roll is passed. Titan void shields must be continuously reenergised and renewed in combat operations and so as the Titan is damaged, the defensive potential of its void shields is reduced (see the Damage table listed for the Titan).
Shieldbreaker Missile wrote:...Invulnerable saving throws cannot be made against wounds caused by this weapon
Void shields work similarly to an invulnerable save, but they are not an invulnerable save. They are a third kind of save that is neither a normal or an invulnerable save.
Shieldbreaker missiles only prevent the use of invulnerable saves, so would not prevent the use of a void shield save.
