They have been know for "Misplacing" things. This time when you send it, make sure you highlight dates like on airplane tickets, copy of passport pages that have stamps of entry and exit. Any pictures you send, put where this was and the date. I included 6 I think in my packet of different poses from different days. Pictures are just supporting evidence you were together, the plane stubs and passport stamps are primary evidence. All together this should satisfy what they are looking for.
