So, I finished a pirate hunting mission at Eps Indi, but didn't collect the reward before heading off to Fedmich to do the recent community goals there. Finally made it back to Schneider station tonight, only to find that the mission is gone from my transaction menu. Thus the question--do missions that you've completed eventually expire if you don't collect them, or did I run into a bug? And before you ask, no, I haven't lost my ship since doing the mission. Thanks!