You need to do Derealize on any difficulty again - the quests are not available anymore. [quote]Fixed an issue where the Portal version of the Derealize Exotic Mission was not awarding Barrow-Dyad or its related intrinsics and catalysts. Weapon, intrinsic 1+2, and catalyst 1 will be awarded on first completion on any difficulty. [b]Intrinsics 3, 4, and 5 will be awarded sequentially on activity complete on any difficulty.[/b] Catalyst 2, 3, and 4 will be awarded sequentially on activity complete in Master difficulty or higher.[/quote] https://www.bungie.net/7/en/News/Article/destiny_update_9_5_0_1