In the rules for mobile deployment, it states that the attacking HQs are place on the table edge, at their point of entry, and then the defender deploys his forces.
However, in every scenario where the attackers are using mobile deployment, it states that the defenders should deploy first.
Does this mean they deploy before any attacking HQs are placed on the table edge? Or should it follow the main rule for mobile deployment; attacking HQs are placed and then the defender deploys?