If you look at this project, the two scenes get lit differently after they get reloaded ( look at the box for a few seconds to load each room ).
The editor lightmapping is giving different results than the editor lightmapping.
https://playcanvas.com/project/541842/overview/vr-project-scene-swapping-2
Room 1 Editor Lighting…
Room 1 lightmapper.bake()
Room 2 Editor Lighting
Room 2 lightmapper.bake()