Corrupted Unique Map will not open portals

I dropped a unique "The Coward's Trial" map from Ultimatum.

Whenever I try to open it from the map device it says:
"Activation failed. Unable to open portals to area".

I assume it's because it's corrupted with a "Contains a Vaal Side Area" modifier?

Got one today. Same thing on Xbox.

This is also happening for me. I'm on PC.