Custom MTA map

[Vlad Maksymenko]

Hi all. I'm new to MTA mapping, please help me. For the sake of testing, I deleted the object using MED in the GTA SA files. When I go to the Map editor in mta, I still see this object in all its glory.
The question is, do files from GTA SA somehow affect the built-in map?
I also tried to add my objects to the Map editor by editing the IMG archive, the object was successfully replaced.
My goal is to remove the map from the MTA and replace it with my own, but not using removeWorldObject.
Where does the MTA generally get information about which objects should be located and where to build a standard map? Can I edit this data?