The way weapons are sorted by default in the vault, which was previously by release order from oldest to newest, has been completely messed up since the launch of Episode: Heresy. Arrivals weapons are now the first in the vault, and older weapons like those from Red War have been moved farther in, amongst other weird shenanigans. It looks to me like weapons from Red War to Season of the Worthy got moved to after Season of the Plunder, Season of Defiance and Lightfall got moved to between Season of the Plunder and Red War, and the Episode:Echoes weapons got moved amongst the Season of the Wish and Into the Light weapons. It has been incredibly difficult to find my gear in-game since Heresy because of this. Weapons have been in the same relative space for years and there is no rhyme or reason to the new sorting system which makes me think it's unintended. Not many other people were bringing this up and it hasn't been officially acknowledged as far as I know, so I figured I needed to post about it. Please look into fixing it soon.