The title says it already. I created a new interior cell and after a while I decided it would be nice to have a lighting that is a bit darker. World->Interior Cell-> tweaked stats->apply->ok->save

Looks fine in CS, but doesn't update ingame. Started a new game, no difference. Checked radius of existing light sources, no large range lights in my cell. I'm clueless. Way back I made a cell that was dark as in a cow's ass, but now it doesn't work.

Any ideas???

Really strange.. never heard of such a thing tbh.

Hope you can solve it though!

Ok, got it, I tested that cell as "behave like exterior" a while ago and that seems to have logged in into the save game. started a new game now and everything is fine, but if I make some further changes, it doesn't update again. Looks like lighting of interior cell cannot be changed during an existing savegame. Very odd.

Are you Updating your save file with Wrye Mash after making changes? You need to.