WoW Classic Season of Mastery players can transfer characters to other Classic realms (or the character will be deleted)
The WoW Classic team announced that players of Season of Mastery characters now have the choice to transfer to Wrath Classic or Classic Era servers -- because Season of Mastery servers are going to be closed, and the characters remaining there straight up deleted, at a later date yet to be announced.
WoW Classic Season of Mastery players will be able to transfer to either Classic or Wrath Classic servers for free
WoW Classic game producer Aggrend recently posted on the forums to announce there will be a way for people to carry over their Season of Mastery characters into either Wrath Classic or into a regular Classic server.
Should there be a Cataclysm Classic?
WoW Classic will introduce the new Season of Mastery November 16, which promises to be a fresh restart of the game with faster leveling and more challenging bosses.
You will be able to clone your WoW Classic characters, and play them on both Classic Era and Burning Crusade servers
Here are some good news if you're unsure if you should advance your existing WoW Classic characters into Burning Crusade: Classic content or not: You won't necessarily have to choose!