re: Yeah but...
Nick, the way I read the terrain, that large crater in the first image I referenced was formed before the area was flooded with water. Water filled the crater, for how long I do not know, and then it evaporated and/or subsided deep underground. This caused the cracks in the crater.
What I call the ‘pancake’ craters in the other pictures, were formed after the area dried up and cracked. From the looks of it, the impactors melted the sub-surface ice giving these craters their flat appearance.
Anyway, that is how I read this area of Mars.
Robert