There is a great tool in MIIS 2003 Resource Kit 2.0 called FileViewer.exe. This tool provides a way to display or dump an entry or a range of entries from a file-based MA. This is specially useful when a particular object is generating some import/sync problems and you want to inspect the input file record but it is too big to be managed in your favorite text editor.
FileViewer.exe uses a File-based MA XML export to in order to parse the import file properly. However, for XMAs such as OpenLDAP XMA, it does not recognizes the XML as a usable MA, so you have to do a little trick: