Teleport issue

Sorry for My grammar
I Create a project by 4.14 VR Template and Create five levels as steam level. And I add a actor(CheckController) in MainMap_P to switch different controller.
1.png
2.png
1.png

Then I find the Template default MotionControllerPawn can only be teleported when it is at the same level with BoxBursh and navmesh, but can not when they are loaded in different levels.

The problem is in BP_MotionController TraceTeleportDestination function
2.png

I print debug Log:
correct:


error:

Are there any solutions to solve the controller in different level with BoxBursh and navmesh?