How to Audit Merges in HubSpot: Merge History, the 90-Day Limit, and a Free Whole-Portal Scan

How do you see if a HubSpot record has been merged?

Open the record, click Actions in the left panel, select View all properties, and search for Merged. The Merged contact IDs, Merged company IDs, or Merged deal IDs property lists the Record IDs of every record previously merged into it. Hover the value and click Details to see who merged it and when.

This is HubSpot's built-in, per-record merge trail. According to HubSpot's merge documentation, the Merged [record] IDs property "will contain the Record ID values of all records previously merged into that record." It exists for each object, so a contact shows Merged contact IDs, a company shows Merged company IDs, and a deal shows Merged deal IDs.

• ✓ Where: on the record, left panel, Actions, then View all properties, then type "Merged" in the property search bar.
• ✓ What it shows: the Record IDs of all records previously merged into this one.
• ✓ Who and when: hover the property value and click Details to see who performed the merge and the timestamp.

The limitation is scale. This technique inspects one record at a time, which is fine for spot-checking a suspicious record but impractical for auditing thousands of records across a portal.

How do you export merge history in HubSpot?

Go to Data Management, then Data Quality, open the Manage Duplicates tab, click Actions, and select Export merge history. Choose a date range and file type. The export covers merges up to 90 days back and includes each record's property values prior to the merge plus the merge timestamps.

1. In HubSpot, navigate to Data Management > Data Quality.
2. Open the Manage Duplicates tab.
3. Click Actions, then select Export merge history.
4. Choose your date range (up to 90 days back) and file type, then export.

The export file is still valuable when it applies: it contains the records' property values as they were before the merge, plus the merge timestamps, which makes it a useful "before" snapshot for any recovery work.

What are the limits of HubSpot's native merge audit?

Three limits matter. The export only includes merges performed in the Data Quality tool, so manual record-page merges never appear. The duplicate management tool covers contacts and companies only and requires a Professional or Enterprise subscription. And the export window reaches back a maximum of 90 days.

• * Tool-scoped: only merges made inside the Data Quality tool appear in the export. Manual merges from record pages are invisible to it.
• * Object-scoped: per HubSpot's deduplication documentation, the duplicate management tool compares contacts and companies, so documented merge-history export is effectively contacts and companies only. Deal merges are not covered.
• * Tier-gated: a Professional or Enterprise subscription is required to use the duplicate manager where the export lives.
• * Time-boxed: the export reaches back a maximum of 90 days. Older merges are only visible record-by-record via the Merged record IDs property.

One more thing the native tools cannot do: reverse a merge. HubSpot's Knowledge Base says plainly, "It's not possible to unmerge records." Auditing tells you what happened; if the audit turns up merges that should not have happened, see how Emergency Unmerge reconstructs merged records.

How do you audit merges across your whole HubSpot portal for free?

Emergency Unmerge's Free Bulk Scan checks up to 10,000 records per job. Upload a CSV or select a HubSpot list, and it flags every merged record, classifies merge type and complexity, counts properties, associations, and activities, and estimates recovery cost. The scan is free, read-only, and never modifies your CRM.

The scan accepts three input sources:

• ✓ HubSpot's Merge History Export CSV (the Merged Object ID, Resulting Object ID, Performed by, and Merge happened at columns from the export above).
• ✓ Any CSV export with a Record ID column, such as a view or segment export. This is how you catch manual merges the native export misses: the scan reads each record's own merge history, regardless of which tool performed the merge.
• ✓ A HubSpot list selected directly from your portal (Active, Static, and Snapshot lists are supported).

For every record scanned, the report shows whether a merge was detected, the merge classification (simple versus complex, including chain merges), the counts of properties, associations, and activities involved, and the estimated credit cost to recover it. Results download as a CSV report from your account dashboard.

Scope notes: choose contacts or companies as the object type, and for portals larger than 10,000 records, split the audit into multiple scan jobs. The scan charges no credits and makes no changes to your CRM. To run one, install Emergency Unmerge (the setup guide takes about 30 seconds) and start the scan from your account dashboard.

How should an agency audit a client portal after a dedup project?

Export the merge history from the Data Quality tool while it is still within 90 days, run the export through the Free Bulk Scan, and keep the resulting CSV report as the audit record. Before the next dedup run, snapshot the records first so any bad merge restores instantly.

1. Before the dedup run: snapshot first. Emergency Unmerge's Pre-Merge Backup captures every property and association on both records before you merge, for a single pair from the record's CRM card or in bulk via CSV upload or HubSpot list. If a merge turns out to be wrong, the restore is free, instant, and 100% accurate, and you can re-snapshot anytime for free.
2. Prefer the Data Quality tool for the merges themselves. Merges made there land in the exportable merge history; manual record-page merges do not.
3. Export merge history promptly after the run. The window is 90 days, and the file preserves pre-merge property values you cannot get later.
4. Run the export (or the affected list) through the Free Bulk Scan. The scan verifies which records actually carry merge history, classifies each merge's complexity, and estimates recovery cost per record.
5. Deliver the scan CSV as the audit artifact. It gives the client a per-record account of what was merged and what recovery would involve, and it costs nothing to produce.

For ongoing protection between projects, CRM Data Backup & Restore by Third Space backs up HubSpot contacts, companies, and deals with one-click restore. Free up to 2,000 records.

What should you do if the audit finds 100 or more merged records?

Large findings should not be fixed one record at a time. Complete the Free Bulk Scan, download the report, then contact the Emergency Unmerge team through the support form or joshua@thirdspaced.com. Bulk unmerges run as a guided recovery so rebuild order and re-association are handled safely. Consultations are free.

Bulk unmerge is deliberately not self-serve. When many records were merged, the order in which they are rebuilt and re-associated matters, so the team works through the reconstruction with you as a guided recovery. The path: complete a Free Bulk Scan, download the report, then reach out via the support form (it pre-selects the consulting subject) or email joshua@thirdspaced.com to scope the engagement. The consultation is free and responses typically arrive within 24 hours.

For a handful of records, self-serve is faster: the sidebar card scans any contact, company, or deal for free, and credits start at $4.99 with simple records from 10 credits.