Unity5 Lightmaps problem

Hi all,

I have upload the project file.

https://www.dropbox.com/s/j1gcvokg4pb0j47/LightmapsDemo.zip?dl=0 https://www.dropbox.com/s/t5neoe6kbus9hyl/Images.zip?dl=0

The problem is that after change the scene, the light maps disappeared....

Steps to show the problem. 1. click the scene1 file to get into the scene1. 2. wait for Unity to bake the lightmaps. 3. click the PLAY MODE button. 4. remember the looking in the scene1. 5. click the left-up button to change to scene0 6. click the left-up button to change to scene1 7. you will noticed that the lightmaps is not same as last time you in scene1.

One question more: In the lightmaps view, I can see the lightmaps files..but the "select" button is gray. I can't click it. why?...(there is no lightmaps folder int the Assert, which exist in Unity4, it should be the name as the scene name)

Bests,

Ken