Alert Missions Coming Up Together In The Same Mission.

[Furisado]

During the back to school alert events one of them that happened in the day 9/9/14 placed in Kilken, Venus coincided with an alert that the reward was an oberon helmet blueprint, so when I went to the mission the reward was the reward for the back to school alert specifically an vauban chassis blueprint , I did the mission as normal BUT what happened was : I got vauban chassis blueprint but after when I checked back at the same mission the alert offering the oberon helmet blueprint was gone and so I though : maybe  I already got the helmet from the mission I just did but no, so I ended only with the vauban chassis blueprint.