As for LATAM tickets issued before August 31, 2025, I’m not sure whether AS has changed its points earned policy. AS website has removed both SQ and LATAM page, so I contacted AS customer service, and here’s the response I received:
"You will not earn points for travel on or after December 31, 2025 with LATAM, regardless of when your ticket was booked."
Is there anyone who also checked this with AS?