I've just completed the campaign - which has three cinematics, the one when you begin, the one a couple of missions in and the one at the very end - correct?

However, I accidently skipped the latter two of those - the one a little way through and the one at the end.

Now, I can't get those cinematics to play again. The first one plays fine when I start a campaign, but whenever I finish the missions I should get those cinematics on, nothing plays at the end. It ends like a normal mission does. I've tried reloading the end-saves for those missions and also playing a little bit through the campaign quickly on easy to get to the mission that should play the first of those - but, nothing doing.

This a bug...or am I missing something blindingly obvious?