SoF 2 Map --> JK 2 Map ?
 

I want to copy the columbia maps (col2) from sof2 to jk2, I know that they are the same format and were both build by raven. how can I do it and how do I know which files I have to copy in which folders?

I'm not sure if it will be entirely possible.
For one thing, SoF2 came out after JK2 so it is slightly more advanced. It could have entities and JK2 wouldn't know how to handle.

In EF, we can work normal Q3 maps without doing anything to them (just drop the Q3 map pk3 in the BaseEF folder and load the game).

But this is illegal to do, so I can't really help you out. You're not technically allowed to port one games assets to another.

Completely custom maps made for SoF2 with all custom textures are considered 'ok' to do.

Anyway, the basic thing you need to do is load a .bsp in JK2 and see what happens. If you get a BSP version error then there is no way around that other than getting the .map file for the SoF2 map and recompiling it for JK2.
.map files are the map source files btw.. and not all are released, if any.

EXiT