imported lightmap weird display in Unity

Hi, I have been following threads on importing lightmaps to Unity but nothing seems to work. I have model in Maya, baked lightmaps(light and color)in Maya and then imported the model in Unity. The model has 2 UV sets, the lightmap being assigned to the second one. Now, on importing to Unity and setting the lightmap to the channel in Windows>lightmapping>Maps, I a weird display of the lightmap. I have attached screenshots of my model in Maya with the specific lights and the lightmapped model in Unity. I have been stuck at this problem for quite a long time now and any help would be highly appreciated. Thanks!