Hey, i had something like that. I had Han and Chewie with Antilles in a big battlegroup on there way to attack a planet, when the message came that antilles is on a mission with leias ship and that he is not longer aviable. In this mission the heroes Anttilles and C3PO disapear in the storyline. The problme was that Han and Chewie also disapear. So i couldn´t send Han and Chewie to Mon Mothma. I played the Rebel campaign in medium. At the beginning i had some problems with fighting against big imperial fleets. I reload a saved game a few time until i won the battle. Maybe it´s not fair but whatever. I conquer some planets and build up my defenses. I did´t fellow the storyline for a while and as i start going further with it, it didn´t make sence at all anymore. For example the mission where all the Imperiall ships are disabled by a EMP bomb. The wake up one after each other and before i could finishing them off the mission end with some dramatic kind of "let´s getta outta heree". Ok i was maybe to defensive and i build to big and to strong fleets. But the AI should react on it. When i play Cold War the Ai can do the some?! I just overpowered them. Tactic was not longer needed. The Ai just didn´t build anything anymore or create even big fleets. The Imps had a way more planets. So the should be able to earn as much money. I had more than i could spend. What ever. There are some bugs where you can break the campaign.