 This agreement effectively ended the Challenge Cup rule in which a new champion was crowned after it won the title of the previous champion's league.However, the 1915 Ottawa Senators, the 1916 Portland Rosebuds, and the 1918 Vancouver Millionaires all engraved their names on the Cup even though they did not officially win it under the new system.The NHA dissolved in 1917, and the National Hockey League (NHL) took its place.