When I log in to my QFF account, I appear to have two bookings for travel in July / August.

I'm actually travelling:

BNE-SYD
SYD-SIN
SIN-LHR
LHR-ABZ

in July and returning in August

My flights are all ticketed by British Airways, but because they don't operate their FF programme in Australia, I've added my QFF number.

I just logged in to my QFF account. I clicked on View your Bookings instead of View your Summary. I wasn't surprised to see my BA booking because at some time, they must talk to each other. What I was surprised to see was a separate booking with a completely different booking number for all the same flights. The only difference is that where I'm flying domestically in Australia, the original booking shows the BA codeshare flight numbers. The "new" booking number shows QF flight numbers for my flights on Qantas. I've paid to select seats on some of my flights, and these are the same on both booking numbers.

Should I be worried about that second booking number? I haven't flown much, and I don't know much about how the airlines work. I've seen multiple thread on Flyertalk about people being "no shows" which cancels their booking. I can really only check in for one of the flights, but would not checking in for the other cause the remainder of my flights to be cancelled?

If I have to ring someone, would it be BA or Qantas?