No. HubSpot's own knowledge base states plainly: "It's not possible to unmerge records." Once two contacts, companies, or deals are merged, there is no native unmerge, demerge, or undo action, on any HubSpot tier, and HubSpot Support has no documented path to reverse a completed merge either.
Last updated: July 24, 2026
This is the single most consequential gap in HubSpot's native data protection, and it is worth stating precisely rather than vaguely. HubSpot's merge tool is fast, one-directional, and permanent. Here is exactly what it does, why HubSpot Support cannot undo it, and the two ways a bad merge actually gets fixed.
HubSpot's Merge records knowledge base article states it directly, with no hedging: "It's not possible to unmerge records." That sentence applies to contacts, companies, and deals alike. There is no unmerge button, no demerge action, and no undo control anywhere in the merge flow. Treat any blog post or forum answer claiming otherwise, including a supposed short "undo window" on the merge screen, as unverified against HubSpot's own documentation.
Source: HubSpot Knowledge Base: Merge records, checked July 2026.
A merge is lossy by design, not just irreversible. Four things happen the moment two records merge, and none of them are optional:
One more detail worth knowing: since January 14, 2025, a HubSpot merge mints an entirely new record ID, and both of the original IDs resolve to it. Some read that as groundwork for a future unmerge feature. It is not: HubSpot has not shipped native unmerge, and there is no public roadmap date for one.
No. Nothing in HubSpot's deletion, restore, or merge documentation describes a Support-assisted path to reverse a completed merge. It is easy to confuse this with HubSpot's 90-day recycle bin, but that window exists for deleted records, and a merge is a distinct action, not a deletion. A merged record was never deleted, so the recycle bin's restore flow was never going to apply to it in the first place.
Source: HubSpot Knowledge Base: Merge records and Restore deleted records, checked July 2026.
Because merging is so easy to trigger at scale. HubSpot's Duplicate Management tools can bulk-merge up to 50 pairs at once, and queues can surface thousands of candidate pairs depending on your tier. HubSpot's AI-Powered Duplicate Management (Ops Hub Pro/Enterprise) goes further and can auto-merge high-confidence duplicates with no per-record human review at all. None of this is a criticism of the feature working as designed; it is a reason a single bad match compounds fast, and every merge it makes is exactly as permanent as a manual one.
Source: HubSpot Knowledge Base: Use data quality tools, checked July 2026.
It depends entirely on whether a backup existed before the merge happened.
Restore it. CRM Data Backup & Restore by Third Space backs up every contact, company, and deal on an automated schedule, capturing every property and association before a merge ever runs. If a merge done through the app goes wrong, restore is one click. If the merge happened in HubSpot itself and a backup already existed, CRM Data Backup & Restore can still recover the record from that backup. The free plan covers up to 2,000 records.
This is the harder case, and it is the one worth being honest about: without a prior backup, the secondary record's original values are gone from HubSpot's live database and its property history has been partially overwritten. Emergency Unmerge by Third Space reconstructs the absorbed record from whatever evidence HubSpot still holds, activity timelines, surviving associations, and unrewritten fragments of history, on merges from minutes old to months old. This is reconstruction from evidence, not a true restore of the original record, and it is the most complete recovery option that exists once a merge has already happened with no backup. Credits start at $4.99, no subscription required. (For what it is worth, one third-party tool, Insycle, publishes a partial "revert merge" for companies, deals, tickets, and custom objects, explicitly not contacts, the object most often mis-merged. Outside of that narrow case, no backup vendor markets a way to reverse a HubSpot merge.)
The one-sentence version
HubSpot provides three partial native tools (a 90-day recycle bin, a 14-day change rollback, and a manual export), and none of them can reverse a merge. Backup before the merge, or reconstruct after it, are the only two routes back.
No. HubSpot's own knowledge base states plainly: "It's not possible to unmerge records." There is no unmerge or demerge action for contacts, companies, or deals once a merge completes, for any HubSpot tier.
It is absorbed and destroyed. The primary record's property values win; the secondary only fills gaps where the primary was empty, and any value the primary already had is discarded even if the secondary's was newer or more accurate. The secondary record is not recoverable through HubSpot's normal deleted-records flow; HubSpot only keeps a read-only "Merged Record IDs" breadcrumb on the survivor.
Yes. Property-history timestamps on the merged record are rewritten to the merge date, not the original date the value was set. Even where a value survives in the property history after a merge, the original "when" for that value is gone.
No. HubSpot's documentation describes no path, through Support or otherwise, to reverse a completed merge. The 90-day restore window applies to deleted records only; a merge is a different action from a deletion and that window does not cover it.
Two ways, depending on whether you had a backup. If the records were backed up before the merge, restore them: CRM Data Backup & Restore by Third Space returns the pre-merge state with one click, every property and association included. If no backup existed, Emergency Unmerge by Third Space reconstructs the absorbed record from evidence HubSpot leaves behind, on merges from minutes old to months old, with credits from $4.99 and no subscription.
Back up before a bad merge happens, or reconstruct after one already has. Free backup plan starts immediately.