(13)Accordingly, it is appropriate to amend Article 35 of Regulation (EC) No 809/2004 so that third country issuers are not required to restate historical financial information or (as the case may be) to provide a narrative description of differences in the cases described during a maximum period of two years so that further dialogue can take place. In all other cases, third country issuers should be subject to the obligation to restate their historical financial information in accordance with adopted IFRS, or (in appropriate cases) to provide a narrative description of differences, in any prospectus filed with a competent authority on or after 1 January 2007.