premise: Having acknowledged that it, particularly within a networked environment, the return and/or destruction of electronically stored information may be impossible, extremely or otherwise unduly difficult or costly, the immediately preceding sentence is not intended to, and does not obligate the Receiving Party to make extra-ordinary efforts to destroy electronically stored copies of the Confidential Information, provided that, in relation to any such copy that is not destroyed the Receiving Party’s obligations of confidentiality and restricted use shall continue as per the provisions of this Agreement. 6.4. Notwithstanding Section 6.3, the Receiving Party may retain a reasonable number of copies of the Confidential Information (and any materials embedding the same) (“Retained Copies”) for the sole purpose of  (i) satisfying any legal or regulatory requirements regarding record and data retention that the Receiving Party is obligated to comply with;  (ii) enforcing this Agreement; and/or  (iii) archiving consistent with good business practices and the Receiving Party’s internal policies. 