What Happens When You Merge Contacts in HubSpot (and What You Cannot Get Back)

Which property values survive a HubSpot contact merge?

The primary record's property values survive. HubSpot's merge documentation states that the merged record's values reflect the primary record, and a secondary value is used only where the primary has no value at all. If both records held different values for the same property, the secondary record's value is gone from the merged record's current view.

In HubSpot's own words, from the Merge records article: "in general, the primary record's property values are prioritized ... if the primary record does not have a value for a property (e.g., null, empty) the secondary record's value is used."

Contacts have documented exceptions to primary-wins:

• * Email: the primary contact's email stays primary, and the secondary contact's email is added to the survivor as a secondary email address.
• * Lifecycle stage: the stage furthest down the funnel is kept. HubSpot's example: a Lead merged with a Customer produces a Customer.
• * Form submissions: counts from both contacts are added together.
• * Marketing contact status: the most marketable status is kept.
• * Legal basis properties: the most recent values from both records are kept.

What happens to activities, emails, and other timeline items?

Timeline activities are combined, not lost. HubSpot's documentation confirms that all timeline activities of both records included in the merge will appear on the new record. Emails, calls, notes, meetings, and tasks from both contacts end up on the surviving record, although they are now mixed together on a single timeline.

The exact wording from the Merge records article is that "all timeline activities of both records included in the merge will appear on the new record." The practical cost is attribution: once two histories share one timeline, telling which conversation belonged to which original person requires reading each activity, and nothing on the merged record labels them for you.

What happens to associations when you merge?

All associated records from both contacts combine onto the survivor. HubSpot's documentation states that all associated records of both records included in the merge will appear on the new record. Where both contacts had a company association labeled Primary, the primary company from the primary merge record is kept on the merged contact.

That Primary-label rule is easy to miss and matters for reporting and workflows keyed to a contact's primary company. Per the Merge records article: "For company associations with the Primary label, the primary company from the primary merge record is prioritized." Deals, tickets, and other associated records from both sides simply accumulate on the merged record.

What happens to list memberships and form submissions?

The secondary contact is removed from all static lists, and those memberships are not carried over to the surviving record. Form submission totals from both contacts are added together on the merged contact. This static list loss is one of the least visible casualties of a merge, so export list memberships first if they matter.

HubSpot's documentation puts it in one line: "the secondary record is removed from all static segments." Active lists re-evaluate on their own criteria, but a static list is a fixed roster, and the secondary contact's seat on that roster is simply gone.

Tracking also changes permanently. The same article explains that all cookies (HubSpot usertokens) associated with either contact are merged into the primary, and the secondary contact's email address is permanently associated with the primary contact. A later form submission from a previously used device is deduplicated by usertoken onto the primary, and a submission from a new device using the secondary's email also lands on the primary record. The two identities cannot diverge again on their own.

What do you keep, lose, and see changed after a merge?

You keep combined activities, combined associations, both email addresses, and the primary record's property values. You lose the secondary record's conflicting property values, its static list memberships, and its separate identity, since its cookies and email become permanently attached to the survivor. Lifecycle stage, form submission counts, and marketable status change under special merge rules.

All rows sourced from HubSpot's Merge records documentation.

Can you unmerge contacts in HubSpot?

No. HubSpot's documentation answers this directly in a section titled Can I unmerge records: It's not possible to unmerge records. The statement carries no exceptions for contacts, companies, or deals. The only documented workaround is using the resulting additional email address or domain name to create a new, empty record.

"It's not possible to unmerge records. ... For contacts and companies, you can use the resulting additional email or domain name to create a new record."

HubSpot knowledge base, Merge records, section "Can I unmerge records?"

Note what that workaround actually gives you: a brand-new record carrying the freed-up email address or domain, with none of the original properties, activities, associations, or list memberships. It recreates an identity, not the data.

The HubSpot Community has said the same thing for years. A long-standing community answer in the How to UN-Merge Contacts thread reaches the same conclusion: HubSpot has no native way to unmerge contacts once they are combined.

Does the secondary record go to the recycle bin?

HubSpot's documentation does not say. The merge article never describes the secondary record's fate, and the restore deleted records article never mentions merges at all, so there is no documented path to recover a merge loser from the recycle bin. For contacts, a restore would likely be blocked anyway by HubSpot's email conflict rule.

You can check this silence yourself: the Restore deleted records article covers deletions and the 90-day restore window without a single reference to merged records, and the Merge records article never states where the secondary record goes. Treat any claim that you can "restore the merge loser from the bin" as undocumented.

For contacts, two documented rules combine badly here. The merge makes the secondary's email an active secondary email on the survivor, and the restore tool states that "If an active contact email matches the email of the deleted contact, the contact cannot be restored." Even if a merged-away contact appeared in the restore tool, that email conflict would likely block the restore, and restore has no documented ability to reverse the property, activity, and association consolidation a merge performs.

How do you see what a record looked like before the merge?

Open the merged record, click Actions, then View all properties, and search for Merged. The Merged contact IDs property lists the Record ID of every contact previously merged into that record, and hovering the value and clicking Details shows who performed the merge and when it happened, according to HubSpot's documentation.

The property exists per object as Merged contact IDs, Merged company IDs, and Merged deal IDs. Per the Merge records article, it "will contain the Record ID values of all records previously merged into that record," which makes it the fastest way to confirm a merge happened and identify the lost record's ID.

There is also a bulk export, with real limits. From Data Management > Data Quality > Manage Duplicates, the Actions menu offers Export merge history, covering up to 90 days back and containing property values prior to the merge plus merge timestamps. The catch, documented in the same article: the option only appears for merges performed in the Data Quality tool, not for manual record-page merges. And per HubSpot's deduplication documentation, that tool compares duplicates only for contacts and companies and requires a Professional or Enterprise subscription.

So if the merge was done manually on the record page, as most accidental merges are, there is no export of what the records looked like before. Property history and the Merged IDs property become the primary forensic evidence.

Frequently asked questions

What are your options if the merge already happened?

You have two realistic paths. If a backup of the records existed before the merge, restore from that backup, since it is the only way to recover exact pre-merge data. If no backup existed, Emergency Unmerge reconstructs the two original records from HubSpot property history, for contacts, companies, and deals only.