Need help with lightmaps in izlude

[Banzou]

I've been editing izlude in r568 and noticed that when it comes to editing lightmaps, the map already has 5 of them with gibberish names but none of them have any effect on the map itself since everytime I click for it to generate lightmaps the whole map ends up black. Should I just delete these lights and create my own sun and ambient light or should I just try to make additional lights and "calculate selected lightmaps" instead of recalculating the whole map?

[Sage]

I would recommend deleting those lights and making your own. Calculating the entire map does not take that long, especially since Izlude is not that big. Don't quote me on this, but if generating the lightmap makes the entire map black, then it sounds like the existing lights weren't registering in the first place, so you have no reason to keep them.