What Happens to Ticket Assignee Information When a Zendesk Agent Account is Deleted?

This article explains what happens to ticket assignee information when an agent leaves and their account is deleted or downgraded to a end user.

• Closed Tickets: Agent name retained
• Resolved Tickets: Changed to the deleted admin account
• Unresolved Tickets: Changed to all users (reassignment of the assignee needed)

Therefore, it is recommended to reassign unresolved tickets to another agent before deleting the agent account or downgrading it to an end user.

Reference site: Downgrade and Remove Agents