Hi, Just checked Mapscape and was able to create a nice map in a few seconds! Unfortunately, I'm not using Dark Basic but another framework so I can't have the models with the lightmaps.
Collada would be really complex to implement. But I know that .OBJ support 2 textures coordinates. .OBJ would be able to support the map export with all the features (lightmap). .OBJ is much simpler than Collada to implement.
You can check the format description here:
http://en.wikipedia.org/wiki/Wavefront_.obj_fileDo you think there could be a possibility of at least this format?
[EDIT] I downloaded DARK GDK and just found out that it can natively export in .X but no other format. Since I don't know if you have access to the low details of the model (vertices, faces, edge, normals, etc). Not sure you will be able to export in .OBJ or any other format.
[EDIT2] Ok. Found a way to load the .DBO file with Ultimate Unwrap, it preserved the 2 uv channels, but the images maps are not assigned anymore. Channel 1 was for the diffuse and channel 2 for the Lightmap. Re-assigned the maps in 3DS max to see and I got the lightmap working!
So there is a way out using Ultimate Unwrap. I've tried also with Fragmotion, but the second channel (lightmap) is not preserved correctly.
EDIT: Got in contact with Ultimate Unwrap and they fixed the issue. To have the lightmap, just select each map in the material slots in UU3D and set the map to "composite" to have the lightmap visible and export it.