I got that mission last night to take out the pirate dreadnought and managed to complete it in the super fast corvette after taking an entire hour to do it!
I went back to station, sold my stuff, rearmed, exited station, then exitied game.... yet when I started it up today, it's last saved point is BEFORE i did that mission! AGGGGGHHHH

This combined with the fact that the progression in this game is super slow (weapon,etc power progressive, while cost is exponential), just makes me wanna quit. :-(

Anyone know why that happened and how I can prevent it happening again?