Classic Rewards Upgrade Priority

Hi all,

I have a flight booked from Hong Kong to Melbourne leaving on the 3rd of October. I've requested a classic rewards upgrade for the flight from Economy to Business.

I'm currently a Platinum FF however my last day of Platinum will be the 30th of September (a few days before the actual flight). I'm wondering whether my priority of being granted the upgrade will be based on my FF status at time of request or at time of allocation (when I'll have dropped to Gold).

A bit of an edge case, so I'm hoping someone can shine some light. Thanks!