Forum:High Ground forge

Recently i was trying forge out for the first time and so i went to high ground(my favorite map) to try it out. Once i started to get the hang of it i saved and played a custom match by my self, when i noticed the gate was shut. So i went back and opened it with my character then saved and in the custom match it was still closed. So my question is, how do you save the gate open in high ground while playing in forge?