So earlier today I was having issues with zombies spawning in the wrong zones. How my map is structured is there is a multitude of ways to get around. I have a central zone that connects to many zones. Picture to show(http://imgur.com/a/cGxP4) So anytime i entered this zone it caused zombies to spawn where they shouldn't. So in my gsc(https://gyazo.com/93eb87f166e79e5fb56fb774e531e89a) all of them were enter_zone4. Which caused anytime i used one enterance to trigger all of them, which caused zombies to spawn. So i solved this by adding zone4_1, zone4_2, etc.

Can you go into more detail on how you fixed this? I tried to do what you said but it didn't work for me. Did you add 2 zones in the same place but with different names?