We are taking about two different things here. Generally here when we refer to a *.img file we are referring to the fully compiled image file directly usable in a Garmin device, which is what i mean. BaseCamp can read both locked and unlocked images files of that type, MapSource cannot see them. You are referring to the image components of a MS folder. MapReverseConverter converts current NT gmap folders to the legacy NT type readable by MS v16.13.7 and earlier which can't read the current gmap folders. Later MS versions can read both types of folder.

We were at cross purposes in regard to the term image or .img.