I spawned into an "Inner" trigger area defined in CfgUndergroundTrigger.json from a cold game start, but the ambient lights and sounds were from the surface instead of the dark & spooky underground ones.

1. Define an Inner trigger in cfgundergroundtriggers.json (mine is below).

2. In-game, move your character inside the trigger, observe the lights and sounds are dark and spooky.

3. Exit the game completely.

4. Start the game and reconnect to the server.

5. Observe the lights and sounds are wrong. The lighting and ambient sounds are the surface defaults, not the underground as expected.

My json:

{
    "Triggers":
	[
        {
            "Position": [ 14471.650391, 69.45493698, 170.041172 ],
            "Size": [ 800.0, 400.0, 180.0 ],
            "Orientation": [ 0, 0, 0 ],
            "EyeAccommodation": 0.01,
            "Breadcrumbs": [],
            "InterpolationSpeed": 0.0,
            "AmbientSoundSet": "Underground_SoundSet"
        }		
	]
}

The tunnel object in the video is located at 14450.000000, 100.000000, 200.000000. It is spawned in using objectSpawnersArr . Otherwise the server is vanilla. Linux dedicated server.

I expected spooky underground sounds and darkness.