Is there any possibility to remove the unwanted maps on IMG? Let say, i have OSM (Luzon, Visayas & Mindanao) and Roadguide (Luzon, Visayas & Mindanao) in one IMG file and i want to remove the LUZON map on OSM and Visayas on Roadguide.

Is it possible to do that? If so, how will I do that?

Thanks!