realtime light breaks baked GI

Hi, I've got a forward rendering scene with a building, about 30 "bake point lights" in it, and a direct light (sun) set to mixed. I've "baked GI" my scene, the lightmaps are fine.
Main problem : - The GI/Lightmaps display only when the sun is off. (sun breaks GI / lighmaps) Secondary problem : - Can't get the sun cast shadow from LightMap static objects (building) on non LightMap static one (ground)

I would deeply appreciate help on those two issues. Thanks (please excuse my English)