"Hostile Takeover" (Bespin) special setup

By ricope, in Imperial Assault Rules Questions

No spoilers here

I just realized the special setup says "Increase threat by the threat level". I'm pretty sure ALL the side missions I've ever played says "Increase threat by twice the threat level". Is this a typo? How did you guys play it? Should it say twice the threat level?

TL;DR: I don't think I've ever seen a side mission says "increase threat by the threat level", wasn't it always "twice the threat level"?

Special Setup is usually twice the threat level, but not always.

Hostile Takeover gives 5 threat at the beginning. I don't think it's a typo due to mission events.