.ics file is opening as Appointment though it has Organizer and Attendee

HI,

Please see the following .ics file

BEGIN:VCALENDAR

X-LOTUS-CHARSET:UTF-8

VERSION:2.0

PRODID:-//Lotus Development Corporation//NONSGML Notes 8.5.1//EN_C

METHOD:PUBLISH

BEGIN:VEVENT

DTSTART:20101229T160000Z

DTEND:20101229T170000Z

TRANSP:OPAQUE

DTSTAMP:20101229T131925Z

SEQUENCE:0

ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE

:mailto:myemail@gmail.com

CLASS:PUBLIC

DESCRIPTION:Some Description

SUMMARY:Testing

LOCATION:Place

ORGANIZER;CN=“Name”

:mailto:receiversemail@gmail.com

UID:12719423047810.35029579498474506

X-LOTUS-NOTESVERSION:2

X-LOTUS-NOTICETYPE:I

X-LOTUS-APPTTYPE:0

X-LOTUS-CHILD_UID:AB85103231EC23BF30E9CFE3E41AFE27

END:VEVENT

END:VCALENDAR

I am able to import this .ics file in to Lotus Notes. But when I open it, it is opening as appointment instead of meeting. What changes do I need to do for opening it as Meeting. I am using Lotus Notes Client 8.5.2.

Thanks,