premise: At any time upon the request of either disclosing party for any reason, each receiving party and its Representatives shall promptly deliver to the disclosing party or destroy all Evaluation Material (and all copies, reproductions thereof) furnished to the receiving party or its Representatives by or on behalf of the disclosing party pursuant hereto (whether in hard-copy form or on intangible media, such as electronic mail or computer files), provided, however, that, the receiving party or its Representatives shall not, in connection with the foregoing obligations, be required to identify or delete Evaluation Material held electronically in archive or backup systems in accordance with general systems archiving and backup policies. 