So I broke the Veldt...

I am working on my 3 Scenarios hack right now, and it has required some extensive edits to the WOB Map using Zone Doctor. All of the World Map Events and Exits are working correctly, as are the Battle Zones. However, the Veldt area doesn't trigger the "Wild West" music. It just plays the default world map music on the map and all of the battles.

Curiously, this only affects WOB Map A. When I load a later save after the events that open up the route to Nikeah and raise the floating continent, the music is working correctly. Any ideas one what to check? I have browsed the available disassemblies, but either I missed it or this information is not there.