I completed the mission on my titan, made it to the end of the mission, got the machine gun, finished the mission and dipped. As soon as I got to orbit, I noticed Rohan's key was still in my inventory, so I went ahead and got rid of it. Apparently the game hadn't registered my completion of the mission and was telling me to go back and do it again, but since I didn't have Rohan's Passkey anymore, I couldn't access the mission. I've tried switching to all my characters, I tried looking for the key from the quest log at the tower, and I also tried seeing if it might've gone back to Nimbus or my vault, yet I can't seem to find it anywhere. Now I'm essentially permanently locked out of getting the new strand aspects on all 3 of my characters because I had the audacity to delete a quest item for a mission I'd already completed. I really need someone to help with this if there's even a method to do so. PLEASE Bungo, I really need some assistance.