Blizzard has updated their hotfix blog with updates for Wrath of the Lich King Classic. Alongside a handful of fixes for buggy dungeon bosses and quests, there are new server transfer gold limits based on character level
HotfixesSEPTEMBER 27, 2022
Wrath of the Lich King Classic
The maximum amount of in-game currency that can be transferred to another realm is now 500g for player-characters at levels 10-30, 2,500g at levels 31-50, and 25,000g at level 51 or higher.