7. Learned Assistant Government Pleader further submits that the Government, after duly considering the representation submitted by the Association of Private Aided Junior Colleges and the report of the Director of Intermediate Education, issued G.O.Ms.No.23, dated 09.03.2011, extending the benefit of preservation of proportionate leave, prospectively, to the teaching and non-teaching staff working in Private Aided Junior Colleges in the State, in terms of G.O.Ms.No.35, dated 16.01.1981, and G.O.Ms.No.421, dated 04.06.2001. The said Government Order was issued granting benefit only with effect from 09.03.2011, and the same has attained finality, as it was never challenged by the concerned persons. It is therefore contended that the petitioners cannot, at this belated stage, seek to reopen the issue in respect of the period prior to 09.03.2011 by relying upon the interim order passed by the Hon’ble Composite High Court of Andhra Pradesh at Hyderabad in the writ petition referred to supra. The said writ petition was filed by the Association of