The MAHA ceased to exist when the Nova Scotia Hockey Association was granted branch status in the CAHA in 1974, and then the Prince Edward Island Hockey Association was formed and also granted branch status in the CAHA.
The MAHA's existence ended when the Nova Scotia Hockey Association became an official part of the CAHA in 1974. This led to the formation of the Prince Edward Island Hockey Association, which also gained recognition within the CAHA.