I assume you are talking about the NppFTP plugin for Notepad++, because Notepad++ itself knows nothing about FTP.

The NppFTP plugin uses a different underlying library and a different set of settings than does FileZilla, so it would be doubtful that there’s much configuration that it could copy over; but currently, as far as I know, there’s no way for any such import to occur.

If you’d like that feature, you’d have to request it from the author of that plugin in that plugin’s issue list