To make the gamestate persistent just save/load what you need using https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/GameFramework/AGameState/SeamlessTravelTransitionCheckpoi-/index.html
To make the gamestate persistent just save/load what you need using https://docs.unrealengine.com/latest/INT/API/Runtime/Engine/GameFramework/AGameState/SeamlessTravelTransitionCheckpoi-/index.html