During the ground portion of the mission, there is an optional mission to scan the holographic hostages. I've done this mission at least 5 times now and I never once thought to worry about it until tonight on my newest character. Trouble is, go figure I decided to untie the real hostages first and then planned to scan the Holographic Hostages after I was finished with everything else. Well crap, I lost the optional mission the very second I finished untying the final real hostage. So since I already have so many max level characters and it is very highly unlikely I will be running that mission again, I have to know...what did I miss?