Tunnel showing up on map after switching to US team

I recently played a game where I was playing on the NVA team as a squad leader on An Lao Valley. At some point I switched teams (I don't recall if it was an end of round thing or not). Prior to switching, I placed a tunnel north of the Delta objective. After switching teams, I noticed that my map still showed the tunnel I placed on my map. Here is a screenshot that I managed to take while piloting the Loach: http://ift.tt/2tZepjk

Tunnel showing up on map after switching to US team