Yup if you didn't read the end part i said ''I've even tried re-installing the map but didn't help either''
It looks like your game is loading the new level file and pulling from the old assets. There is probably an old version of trynelgren located in one of beamng's document folders. Can you see if you have an old version of trynelgren located in documents/beamng.drive/mods or doc.../beam.../ levels?
I loved playing on this map. And I can guess the Grand Duchy of Ouerbacker is located between Italy ("The Pasta People") and either Austria, Switzerland or Liechtenstein ("The Serious Speakers")