Different Disks, Problem or Glitch?

I read somewhere here that in strike, you can kill all the targets and there is still like 4 points showing on the board. I forgot the details (map,etc). Also, I think you are on Xbox, right? I was thinking the devs cleaned up a few glitches with the patch, maybe that was it. But not so if you are on 360. They could have cleaned it up on a newer disk, I suppose.