In UN Comtrade, France and Monaco considered as one reporting entity (one customs area), with country code 251 (France includes Monaco and its DOM/TOM). UN Comtrade does not trade between France and Monaco because it is considered as internal trade (not international trade). If you can give me exactly the selection that you want, I can give you ...

1) Yes it is possible to import from itself (it's called re-imports). For further info, see: See http://comtrade.un.org/kb/article.aspx?id=10038 or go find International Merchandise Trade Statistics Concepts & Definitions Rev.2 http://comtrade.un.org/kb/article.aspx?id=10173 2) UN Comtrade does not provide option to keep the missing values. ...