Switch map (keeping clients). Server travel not work.

I use https://github.com/oculus-samples/Unreal-Discover sample, based on Epic Online Subsystem (EOS).

I can create session (testroom) as host, and i can join remotely as client. Players see each other. Let it be SceneMap1.

I want to switch map, and keep host and connected client(s) on SceneMap2.

When i try switch map by any of this nodes, session just ends, and throw me at game default map. (Server Travel from Advanced session plugin)

EOS log is following
- Application Entering Background / Quitting
- Attempting  to Destroy Session testroom
- Application entering foreground
- Destroyed session testroom

How to fix it?