level lighting

hello, is it possible to give one level a day & night light without dynamic light? prebuild, without copy the whole level.

[Precomputed Lighting Scenarios](

When a Lighting Scenario level is present, Lightmap data from all Sublevels will be placed inside of it so that only the Day Scenario Lightmaps are loaded when it’s daytime. As a result, Lightmaps will no longer be streamed by Sublevels.

How to best use Lighting Scenarios in conjunction with streaming?

Lets say you have 2 (day and night) global lighting levels containing Directional Light and Skylight as well as lighting sublevels for each streaming zone containing local lights (day and night). I need to bake each streaming zone by itself for faster baketimes.