(4)A transfer of audit working papers or other documents held by statutory auditors or audit firms and of inspection or investigation reports to the competent authority of a third country or territory reflects the substantial public interest in carrying out independent public oversight. Accordingly, the competent authorities of Member States should, in the framework of the working arrangements referred to in Article 47(2) of Directive 2006/43/EC, ensure that the competent authority of the third country or territory concerned uses any documents transferred to it in accordance with Article 47(1) of that Directive only to exercise its functions of public oversight, external quality assurance and investigations of auditors and audit firms.