@Hepps Thanks! Clear Now. Regards.
@MirkoBruner The game engine has a variety of things preloaded in its folders... so if you do not put things specifically into the game folders then the engine will draw them from its folders (so long as the name of the file matches identically)... if you do put things into your game folders the engine will automatically use whatever is in the game folder.
I am noting that the content of the zip files is not always the same.
Some map zip files have (for instance) units and vc.png files, other zip files of maps don't have those files.
In the case where those files aren't present... where are they stored?