Hi guys! A couple hopefully easy questions.

1. We are flying from Melbourne to Sydney on one ticket with Qantas, and then with Qatar to Europe on another. Can I check my bag all the way through, or will I need to collect in SYD? The Melbourne to Sydney is in economy, and the Qatar routes are in business, so not sure if this impacts on anything.

2. Is there anyway to upgrade using cash or BA miles for a Qantas itinerary? The only upgrade option online is with Qantas miles, which I do not have.

Thanks!