I had been working on a Hardcore Violet Void crusade solo for a few days. On my 8th mission, after completing it and returning to the bridge, the mission was not shown as completed and I could not selected it. After quitting the game and launching it again, my void crusade had been reset to the shard selection window as well as the investigation section of my journal is empty. 

I am not so worried about the void crusade since I see several other post about bugs, but I am slightly concerned about my campaign missions. I will try a co-op on of a side mission and see if that triggers it to return. 

UPDATE: Running a co-op story mission did bring back my investigation log and when I logged in this afternoon my void crusade seems to have been fixed/fixed itself (the bugged mission is now showing complete).