UPDATE EXPANSION LEVEL

Needs summary.
 UPDATE_EXPANSION_LEVEL: unk1, unk2, oldExpansion, unk3, upgFromExpTrial
==Payload==
:;unk1:
:;unk2:
:;oldExpansion:
:;unk3:
:;upgFromExpTrial: - True when upgrading from an expansion trial.
==Example==
For the shadowlands global launch.
 UPDATE_EXPANSION_LEVEL: 8, 8, 7, 8
==Patch changes==
==External links==
==References==