Mosley thought teams wanted scoring change
The governing body called off the rule change after the FOTA alliance of F1 teams said the unilateral and late move contravened the Sporting Regulations and International Sporting Code.
It is seen as an embarrassing u-turn by the Paris federation, with the Daily Mail newspaper headlining the saga 'F1 farce'.
But FIA president Mosley told the Daily Telegraph that he was aware installing the new system less than two weeks before the 2009 season required the teams' consent.
"Bernie (Ecclestone) told me that he talked to all the teams and everybody was happy," the 68-year-old said.
While the F1 chief executive has championed the 'medals'-style scoring concept, FOTA recently said it only wanted to increase the margin between first and second place by a single point.
The FIA, however, rejected that proposal and pushed instead for the 'winner takes all' scheme.
"I was led to believe they all agreed," Mosley continued. "The World Council was under the impression that they had all agreed."