Do any Oneworld loyalty programs allow retrospective miles/points claims for a non-member at time of travel?

I had some flights on Cathay Pacific recently that I would like to claim miles/points for retrospectively. As Marco Polo Club of Cathay charges a 100 USD membership fee, I will not use that program.
While I had planned to register and collect e.g. with BA Executive Club, I realise now that they require me to have been a member already at the time of travel, which I was not. Similar applies to Finnair Plus.
So are there any other Oneworld loyalty programs that would allow me to register and claim miles for a CX flight before my membership?
Best Answer
Depends how far back, but members of Australian Frequent Flyer group claim that Qantas, a member of OneWorld, allow you to claim for flights up to 30 days before joining.
This is backed up on an article on Australian Business Traveller.
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Can you buy oneworld status?
You can't actually independently earn Oneworld elite status. Instead, you have to earn elite status with a Oneworld member carrier by meeting the qualifications with one of the airline's own frequent flyer programs. The Oneworld alliance currently has 14 full airline members: Alaska Airlines.How do you get oneworld Ruby?
The oneworld partners' frequent flyer programs each have their own tiers that translate to Ruby status. This status can be attained in a variety of ways, generally through obtaining a minimum amount of miles (13000-30000 qualifying miles) and/or segments (14 - 35 segments).What is oneworld Ruby?
As a Oneworld Ruby elite, you'll get access to: Ability to earn/redeem miles on all Oneworld member airlines. Earn tier points on all Oneworld airlines. Access to business class priority check-in. Access to preferred/pre-reserved seating (usually 7 days before departure, as opposed to 24 hours before departure)How do you use oneworld miles?
Earning and Redeeming Flying with oneworld is like a gift that keeps on giving. Book a trip with any member airline and your points will start adding up. When you're ready to redeem them, treat yourself to any eligible member airline or affiliate flight.How to Actually Get Started With Miles and Points
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