As TheClaus says, for a zone line to work it needs to be both in the emulator DB and also hard-coded in the zone 3D file. If it's only hard-coded it gives a "zone down" message and if it's only in the DB it doesn't work at all. 
Hope this is fixed soon. 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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