The CIC (management) Regulations 2007 says that
"Before submitting an appeal or complaint to the Commission, the appellant or the complainant shall cause a copy of the appeal or complaint, as the case may be, to be served on the CPIO/PIO and the Appellate Authorities and shall submit a proof of such service to the Commission".
Is is mandatory for the appellant to send the copies of the appeal or complaint to the PIO and the AA before submitting the appeal to the CIC. and also does one have to send the application only or one has to attach the encls also.
The full sets of the Second Appeal (as being submitted to the CIC) have to be "served" on the PIO and the AA. Get a signature or "proof of serving" from both and attach both those to your Second Appeal to CIC.