I’m a Destiny 2 player from the start, but I stopped playing after I finished the CoO expansion, and just a few days ago recently got back into the game, and have seen I’ve missed a lot of content. The collections is a nice addition, however I’ve noticed there’s quite a few items missing, mostly shaders. I have(had, after dismantling them trying to get the shader) a full set of armor with a Y1 New Monarchy shader(red and gold), but the shader doesn’t show in my collections, and I want to put it on all of my characters. Does the shader just not exist anymore and I screwed myself over by dismantling it?
Anything that was in your inventory at the time Warmind released, or anytime after, was added to your collection, but shaders were only added if you had the shader itself in your inventory. If all you had was a shader that was applied to a piece of gear, those don't count. At the moment, there is no way to get the shader added to your collection if it didn't drop from any of your dismantled items.