My eticket doesnt say anything specific for my flights. It just has a generic section at the bottom with details for carry on and checked baggage for all types of flights - domestic/international for qantas/jetstar/qantas link etc

Jetstar is a JQ number.
I didnt select a QF because it didnt offer me one.
Im prepared to transfer no problem, i have the time. But, i dont want to pay for them, and its a massive difference in baggage allowance...