How to use indirect lighting with stream level ?

Hello everyone, i really wish you can find an answer to my problem …

I use stream level to load the level of my game, it works great ! BUT the lighting made by the lightmass ( or lighting samples, or indirect baked lighting … ) is off for dynamic objects ( objects that can move ).
Where there is no direct light, its dark, no indirect lighting.
For static objects, the lighting is correct.

AND when I touch or move one of those dynamic object : the lighting is updated and correct ! (with direct AND indirect lighting ).

Is there something to do after streaming level to update the baked indirect lighting of the scene ?

(yes its kinda hard to explain … ) THANNK YOU !