replay for Artillery with cluster submunitions

[low_bidder]

AFAIK, you can't and you won't. There is a long technical explanation on the Shrapnel site about why it can't be done. It sounded like BS to me, so I didn't pay it much attention. Search on the WinMBT section of the Shrapnel site. Maybe it will make sense to you. I'm getting old and was never the sharpest blade in the drawer anyway.
Not sure it matters. If you hit something, it explodes and burns. If you don't, it doesn't. How much you miss by isn't important. That is because your opponent IS watching it and what ever you missed will not stay around to see if you miss again next turn. Trust me on that.