Anyone here who got knowledge about UT2003 editor + Maya PLE?

I've got problem with exporting my creations in Maya PLE into UT2003 editor.

I have loaded the plugin in windows - settings/preferences - plugin manager, but I can only save or export as .mp-format.

Are there anything more I have to do before exporting?
Or do I need another program to convert .mp-files into the formats for the UTeditor?