I hv seen this practice on part of nts in other cases. I am not hundred percent sure, yet it is very likely what i am saying. When i was applying for ppra assistant i also applied for assistant director LDA(WASA). In its advertisment it was mentioned that those who took the test for the previous advertisement are exempeted from written test. May be such was the case as we are facing from ppra. N it was not the test that made these jobs cancelled, it was their internal issues. There must be some logic for sidelining us if they are gonna readvertise these jobs. So nts is gonna give us an option to take or not to take the test this time.