I like to say I know what I'm doing with zones, because i do.  I have many zones in my map, and they mostly do a successful job of activating when the correct door is open, but one doesn't work.  I have a zone (lets call it zone3) that is only accessible by turning on the power.  Once the power is on, the door opens to access zone3.  But I found that before I turn the power on, zombies still spawn in zone3 even though there is no way to access it yet.  I HAVE put the script_flag - enter_zone3 in the trigger for the power door and I did include the zone in the script but they still spawn there?  Does it have something to do with it being a power door and not a regular zombie door?

Please help, and thanks!