This system was not used in 2012 due to a league restructure, where the top 4 teams were promoted but competed in the Champions Play-off.
A top 5 play-off would be used team winning the Grand Final being promoted.
The same system was used in 2018 bit the loser of the Play-off Final would have a second chance at promotion by playing 12th in the Championship due to a league restructure.
At an EGM in 2018 the League 1 clubs voted in another restructure of the play-offs and promotion spots.
From 2019 onwards they would use the same system used between 2006 and 2013 by having first being promoted automatically and 2nd to 6th competing in a five team play-off.