How to handle level instance lightning?

I have landscape tiles which im spawning into level. Multipla instances of the same landscape. How do i set up lightning data in those instances so iw would work properly with main level. When i spawn them in they look weird, some are lighter, other darker. Instances themselves have nothing inside them, except landscape data, i built lightning in them even tho they have no lights in. How do i approach this.

Also small other thing, is there a way to get rid of the erro that says level instance have same guid as other level, assigning new guid. I cannot change guid when spawning instanced and it always returns this error, even tho in the end it has no consequences.

Thanks for help.

edit: ■■■■ i thought i was in different tab, if mod can move it to rendering that would be great, my bad