In other words, the levels that we see to have fallen with the breaking of the vessels are the very levels that the damage had the power to reach. And since there is a difference between the place the defect reaches in one name and the place it reaches in a different name, there is a difference in what will fall when the vessels break. Similarly, there is a difference in the way the name of AV is revealed, because it is revealed in whatever can become damaged, inasmuch as it is the main factor involved and it is this that lifts them up.
Only Certain Levels Were Vulnerable to the Cosmic Shattering
Kalach Pitchei Chokhmah 57:9