Dynamite not nullifying The Great Wall?

[Sigvardt]

Anyone else noticed that the Great Wall keeps working even tough you have dynamite?

In two games now my units can only move 1 per turn when fighting an enemy in possession of the great wall.

I am starting to wonder if it keeps working until the owner of it gets dynamite.

 

[eazyseeker]

Indeed, it goes obsolete when the OWNER researches Dynamte.