I am currently aiming to complete my Whisper of The Worm catalyst by collecting blighted essence. However, I was holding off to do it for a while just because I wanted to do other things in the game first, i.e. raid and other catalysts and quests. But I decided today was the day to get the catalyst but when I loaded up Io, the quest was missing. I'm not sure how it happened but the first thing that popped into my head was the Nascent Dawn 4/5 quest I did for Polaris Lance. Mostly because that was the last thing I did on Io when it was the Flashpoint last week. It could also have been I walked through the Lost Oasis and did a Taken Blight Event and some other team opened up the portal for the quest. I didn't go through myself but opening the portal may have done something. Figured I'd share this in case this is a bug with the quest that needs to be patched or if I'm just an idiot who needs some help. Regardless, I decided I'm just gonna redo the normal version to re-unlock the Heroic version.