Upgrade given: J - F
Upgrade location: Lounge
Route: DUS-DXB
Flight number: EK58
Type of ticket: Flex
Date of travel: 05 Feb
Tier status: IO
Tier miles to date: 310,000
Skywards miles balance: 41,000
Number of pax on the same PNR (Including OP): 1
Number of pax upgraded: 1

The IO Team told me, that the procedure for upgrades is still same: IO - Fare-Type - Status