Follow-up tickets vs reopens

Ref: A12 · Track: Agent Essentials · Time to complete: ~3 min

Why this matters

A customer who replies to a ticket you've already marked Solved might re-open the original ticket — or start a brand-new one. Knowing which behaviour Zendesk will pick keeps your ticket history clean and your SLA numbers accurate.

The rule

Zendesk's behaviour depends entirely on whether the original ticket is Solved or Closed.

Solved + customer reply = Reopen

If the ticket is still in Solved state (i.e. within 4 days of being solved), a new customer reply reopens the same ticket:

• Status flips back to Open.
• You (the original assignee) are still assigned.
• The conversation continues in the same ticket with full history.

Closed + customer reply = Follow-up ticket

If the ticket has moved to Closed (4+ days after Solved), nobody can edit it. A customer reply creates a new follow-up ticket:

• Brand new ticket ID.
• The follow-up ticket has a link back to the original, so you can see the history.
• The new ticket is unassigned — it enters your group's queue like any new ticket.

Why it works this way

Closed tickets are archived and immutable. This is important for reporting — your historical SLA numbers can't be corrupted by a customer who replied six months later. The trade-off is that the new context has to live somewhere new.

Creating a follow-up ticket on purpose

Sometimes you want to make a follow-up even when the original isn't Closed yet. Example: the customer has a separate new issue you want to track independently.

1. Open the Solved/Closed ticket.
2. Click the ••• menu on the ticket.
3. Click Create follow-up.
4. A new ticket opens, pre-filled with the requester and a link back to the original.
5. Change the subject and content as needed.
6. Submit.

Gotchas

• A reply to a Solved ticket after 4 days creates a follow-up, because the ticket auto-closed. If you notice this and the reply was meant for the original issue, solve the follow-up with a note pointing to the original.
• Merging a follow-up into its parent doesn't work — parents are Closed and therefore locked. Don't try it.
• SLA counts against the new ticket. A follow-up's First Reply Time is measured from when the follow-up was created, not the original's creation. Good — you're not penalised for the customer's 6-month gap.

Quick check — have you got this?

• You solved a ticket yesterday. The customer replies this morning saying "one more thing". What happens?
• Same scenario but you solved the ticket 7 days ago. Now what?
• You want the new issue on a separate ticket even though the original is still in Solved state. What do you do?

Related articles

• A09 — Ticket statuses explained
• A14 — Merging duplicate tickets and merging users