Basic Action Super Heroes!

If a Multipower has powers in it with a Sustained quality, do those powers continue when another power is used?

Specifically: A character has the Summon power which has the Second Nature advantage tacked on. So the character has summoned his Zombies and they are shambling around the field...

He then uses his other Multipower slot Arcane Bolt (Special Attack)...do the Zombies Vanish?

Yes, the Zombies vanish (or if they are Animated corpses, they just slump over dead)

It's best not to put powers in a multi-power if you want them to continue working while you use something else. This is why I never put Flight in a multi-power for instance.