UPDATE EXPANSION LEVEL

Needs summary. UPDATE_EXPANSION_LEVEL: unk1, unk2, oldExpansion, unk3, upgFromExpTrial

Payload

 * unk1 : number
 * unk2 : number
 * oldExpansion : number
 * unk3 : number
 * upgFromExpTrial : boolean ? - True when upgrading from an expansion trial.

Example
For the shadowlands global launch. UPDATE_EXPANSION_LEVEL: 8, 8, 7, 8