Dunkirch dissapeared ?

I should of mentioned this earlier, almost forgot about it.

Dunkirch city\harbour dissapeared from my map, probably after evacuation of Allies.

Can't tell exactly when this happened but it was still in it's place when I got the message from BDU that Condor inteligence reports heavy shiping activity around Dunkirch.

Some days after I checked the map and the city was gone