I am replacing much of the Northrend map with a new map of my own creation and I've got damn near everything stripped out in terms of NPCs, area tables, light boxes and so on. But one thing I've noticed as I move around the map is ambient noises in specific areas.
Specifically the sound of running water of rivers in these two locations:
We did not 'modify' the area of Northrend, we simply replaced it - no M2s, WMOs, or textures remain from OG Northrend. Is there anything that might be causing us to still hear this sound?