Have just booked my first Qantas flights since arriving in Aus and got a quick question.

Will be flying from Hobart to Melbourne then onto Perth. The flights are on separate bookings, the HBA-MEL in economy paid in cash, MEL-PER in business via a BA redemption both on the same day.

Question is can I use the business baggage allowance for the HBA-MEL flight, as it is a Qantaslink (QF1502) flight does this still come under OneWorld rules?