For Law Domain Realm cultivators, having their Law Domain shattered would result in serious injury or even death. However, recondensing a Law Domain was not an impossible task, it simply demanded a vast amount of resources, time, and effort.
The reason behind this was quite straightforward, comprehension.
Law Domain Realm cultivators had already achieved a deep understanding of their primary Principle, and in some cases, even their secondary Principles.
When recondensing a Law Domain, they only needed to recondense the physical matter of the domain, not its inner workings.
Since cultivators possessed the knowledge and comprehension necessary to create a Law Domain, the intangible part of the process remained fixed. Therefore, the shattering of a Law Domain was the destruction of its corporeal element, it only required reconstruction to recondense the Law Domain, thanks to the cultivator's existing comprehension and prior experience in its creation.