You need the o2 folder before even assuming which o2 file contains which physical objects and where they actually are located at.
Open the console, type in "/frame" and check for 2 specific number clusters. There is a "o2-file,o2-folder” holder. Try to figure out which of the information shown at the /frame instance are the correct ones.
Once got your data, you might get used to the map editor (not a terraforming real map creator), which has been removed from epvp but not at other forums.