Given that the game is designed to constantly be putting you through open world pve/pvp, instanced PvP, and instanced PvE, its really strange that there is no basic quality of life function for changing builds.
This game needs a minimum of 3 build templates. One for each game mode. Playing other game modes should not start with the constant inconvenience of having to redo your build before and after. If a player wants to change their PvE build or PvP build specifically within the template of that mode, than thats one thing. Being forced to change constantly between game modes is unacceptable for a modern MMO where all 3 modes are integral to the games experience.