Got a "Successfully Processed" update yesterday.
Had no idea where my phone was the 3 days between getting picked up and this latest update.
Also, the update message is a bit confusing. It says - "Your request **request_id** for your OnePlus 8T has been successfully processed. We will process it within 48 hours of working days."
My guess is the first processing was to check for the issues and damages with the phone, and the second one might be the actual repair or shipping it a repair center. The website says "Under Repair".