I apologize for wasting your time. I managed to fix it. As I feared, I managed to find the stupid mistake after posting about it despite pondering about it for a couple days. Thanks for responding.I'm not entirely sure what you mean. Do you mean my testmission2 being active? It's meant as an example for a continuous mission like many of the official ones. You can just remove it.
Otherwise I don't know what. A zone doesn't have a description, but you can have multiple active missions at the same time, in the same place.
P.S. I noticed that the line for the coordinates I added in 1.1.3 has the x coordinate doubled and the others shifted. That's not really helpful and I'll fix it soon.