premise: The Receiving Party shall provide attested certification from an authorized representative confirming such return and destruction "provided however, Receiving Party may retain one (1) copy of such documentation in its secure legal files for the sole purpose of administering its obligations under this agreement, as well as copies of electronically exchanged Confidential Information that are made as a matter of routine information technology back-up, which copies shall continue to be kept confidential in accordance with the terms and conditions of this Agreement."