After I import FBX, lighting in my scene chanes

After I import FBX mesh and place it inside my scene, the lighting in my scene changes.
My lighting was perfect the way I wanted and then this happened.
Maybe this is because I am doing this at night ; is lighting in Unreal sensitive to the time of the day ?
Do you know how I can keep my lighting so that it doesn’t change when I import new objects into the scene ?

Hi!

If you have static objects in your scene + static/stationary lights then every single time you place a new mesh into the scene you’ll have to build your light and it will “change”!
When you place a new object into your scene it’s lit up as everything was dynamical! Dynamically lit objects can look nice BUT you won’t get GI and it’s quiet expensive with restrictions…