The base of the Energy Assimilation Array Kyran designed was the seal itself. He could not fix the array, because it was the Void that damaged a part of it. However, since the formulas on other parts were intact, he thought it was a waste not to make use of them.
The seal was irreparable because the damaged part could not be fixed. But if the intact parts were used to create a new array, then it was possible. Rare materials would be needed in order to do this, though. Thus, normally no one would bother reusing an irreparable formation.
Except Kyran, that is. Or to be more accurate, the Void Master.
Using the Void's nature of creating something out of nothing, Kyran could create the materials needed to reuse the intact formulas of the seal.
