I'm finishing my Redrix Broadsword quest and reach the step: "The Begining of the End - Reset your Valor Rank within a single season (5 times) " , which I've done in season 4 (pre black armory). I also got the triumph related to this. The quest step won't update. I've played a couple crucible matches after expecting it to update and nothing so far... Can someone help please? Cheers!
The quest is only retroactive during the current season. Despite unclear wording, you need to reach that quest step in the same season that you get those five resets in.