I have been playing Season of Arrivals through the week with friends, doing a whole host of different Ritual Activities from Dungeons to Raids, and the Umbral Engrams filled up my inventory. I decided to do the quest "Contact" so I could turn these Engrams into the Drifter, but the next step is to "get" an Engram from him, so that I can put it into the device next to him. Since all my slots are full, I cannot pick up that Engram, and the quest is stuck with me unable to submit all my Umbral Engrams. Please delete one of my Engrams for me, or update the quest to send that Engram from the Drifter into my Postmaster. I hope the issue can get resolved soon, without my Postmaster getting filled of Engrams I cannot submit. (EDIT)-- The Umbral Engrams are on my Warlock. Because all Engram Slots are full, this means that Legendary and Prime Engrams will also fill my Postmaster until I can offload these Umbral Engrams, potentially deleting Powerful Gear drops when full, and making it very hard for me to increase my Power Level until resolved. I have noticed that regular Engrams can be discarded, but Umbral Engrams have no option to scrap. If they could, I would delete one myself to get the next step of the quest.