SetActorLocation on a Projectile loses velocity

Development World Creation
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1

I try to make a pong clone and have an Actor with a ProjectileMovementComponent as ball.

When it hits something I get notified and want to reset it to its starting position, I do that with SetActorLocation

void AMyBall::ResetPosition()
{
    SetActorLocation(StartPosition, false);
    ProjectileMovement->Velocity = StartVelocity * ProjectileMovement->InitialSpeed;
    ProjectileMovement->UpdateComponentVelocity();
}

StartPosition and StartVelocity is saved in the constructor.
The projectile does move to the set position, but lost all its velocity.

How do I make the projectile start moving again?