hi prschn
im applying for an open work permit too..and yes they are asking for an itinerAry or flight ticket. but i phoned cic..they said that its because they got the new system regarding wp.. and that itinerary shoudnt be in there. its a requirements for applying temporary visitors visa. theyre still working to fix that problem. but if u apply now. u can just put an explanation letter to that stating ur not suppose to submit that one coz ur applying for wp. hope this help u.