Chandra-Mangala is defined in the sources in two different ways and the difference is not trivial. The narrower definition requires the Moon and Mars in the same sign, a conjunction. The wider definition also admits mutual aspect, which in jyotisha means Mars aspecting the Moon by one of its special aspects, the fourth and eighth in addition to the seventh that all planets cast.
The narrow reading makes the combination reasonably uncommon. The wide reading, because Mars aspects three houses rather than one, makes it several times more frequent, and it will accordingly be identified in many more charts.
A reader comparing two interpretations of the same chart and finding that one reports this yoga and the other does not is usually looking at this disagreement rather than at an error. Neither definition is a corruption of the other; both circulate in the tradition, and practitioners follow the school they were taught in.
The atlas records the combination with the disagreement attached, because presenting a single definition would misrepresent the state of the sources.
The significations attributed to it, drive coupled with acquisitiveness, and a capacity to make money that the literature does not always describe as an unmixed good, are claims of the system. Nothing here is a claim about anyone.