I was playing underground today and we pushed the first part pretty fast, made it to halfway of map to notice the downstairs were still “flooded”, you were able to go beneath the surface and all but the water was still there.
Here is pictures of what happened: http://imgur.com/lT8PQUg,ND1rfAd#0 and http://imgur.com/lT8PQUg,ND1rfAd#1
-Remedica