Well now you've filed me with a sense of dread
Just looked it up. The wrap-up was the miniseries titled "The Peacekeeper Wars" and Prime has that as the final 2 episodes of season 4.
[Edit]
Just watched the original season 4 finale. Did they know when they tagged it "To be continued" that they'd been cancelled?
And yeah, I'd have been *pissed* if that was the last episode and then they cancelled it.
It's been 16 years since I would have watched it, but I'm pretty sure I remember that scene. There have been moments in this season where I knew what was coming, but there was only one moment in episode 3 that felt familiar until that last scene.