Guild Wars 2

Hello, got question. Our guild wish to change guild hall.
I got few questions about this.
Will our upgrades stay with us ?
Will our stuff already deposited in vault stay as well ?
What abut decorations do we have to remove them manually before change or they gonna be back in our deco chest ?

https://forum-en.gw2archive.eu/forum/game/hot/Day-Six-Guild-Hall-Statistics/first#post5679436

1) No, you can only won one at a time
2) Yes, to capture a different one go purchase the expedition for that hall and complete it. You will retain your old hall until you succeed the new expedition. All of your upgrades will then apply to your new hall and you will loose access to your old hall.