CRM Migration Checklist: Move Your Data Safely
Moving to a new CRM is a data and workflow project, not just a spreadsheet upload. A successful migration preserves the relationships between contacts, companies, deals and activities so your team can continue selling without rebuilding its history.
This CRM migration checklist is for small businesses changing customer relationship management systems. It focuses on preparation, import testing, reconciliation and the final switch. If you are still selecting a platform, start with our CRM software comparison.
1. Decide what belongs in the migration
Start with an inventory of the information your team uses: contacts, companies, open opportunities, closed deals, notes, tasks, files and communication history. Separate essential operational records from material that can remain in a secure archive. Importing every obsolete field can make the new CRM harder to use from day one.
Ask the destination vendor which record types and relationships its import tools support. A CSV export of contact details may not include attachments, email history or associations. Identify those gaps before setting a launch date.
- Name one person who owns the migration and one representative from each affected team.
- Document required records, optional history and excluded data.
- List every form, automation, report and integration that reads or updates the old CRM.
- Decide which system is authoritative for each field during the transition.
2. Create a field and relationship map
A mapping sheet explains where each source field will go, its accepted format and what happens when a value is missing. Give special attention to currencies, time zones, dates, dropdown values and record ownership. An imported deal amount is not useful if its currency or pipeline stage is wrong.
| Source field | Destination | Validation rule |
|---|---|---|
| Legacy contact ID | External migration ID | Preserve the original identifier |
| Account ID | Company relationship | Match an existing imported company |
| Deal status | Pipeline stage | Use an agreed stage translation |
| Owner email | Assigned user | Match an active destination user |
| Next follow-up | Task due date | Check time zone and assigned owner |
Do not assume identifiers from one CRM can be pasted into another CRM's built-in record ID field. Store the legacy identifier in a supported external-ID field and follow the destination's import rules. For example, HubSpot's import documentation explains how unique identifiers are used to update records and associate different record types.
3. Clean the data without erasing useful history
Standardize obvious formatting differences and review duplicate candidates before importing. Two records with similar names are not necessarily the same person. Shared email addresses, company subsidiaries and people with multiple roles all need a deliberate matching rule.
Preserve an untouched export separately from your cleaned files. Record which rows were merged, excluded or changed and why. This makes it possible to investigate missing information instead of guessing after the old account is closed. Check the destination's own duplicate-handling behavior; HubSpot's deduplication guide, for instance, describes different matching rules for contacts and companies.
4. Run a pilot that includes difficult records
A test containing only ten complete contacts will miss many migration problems. Include a company with several contacts, a contact linked to more than one record, an open deal, a closed deal, an unassigned task, a special character, a missing optional field and a historical activity.
Use a sandbox or controlled test area when available. Prevent test imports from triggering customer emails or sales automations. Validate the result with a salesperson who knows the original records, then save the agreed import settings and corrections.
5. Reconcile business outcomes, not just row counts
Equal row counts do not prove that a migration worked. Records may exist but be assigned to the wrong owner or disconnected from their companies. Define acceptance checks before importing the full dataset.
- Counts: Compare expected contacts, companies, deals and activities, accounting for intentional exclusions.
- Relationships: Inspect linked contacts, account ownership and opportunity associations.
- Values: Reconcile open pipeline totals by currency and stage.
- Daily work: Confirm a representative user can find a customer, update a deal and complete a follow-up.
- Access: Test what a normal user can see, not just an administrator.
6. Plan the cutover and rollback
Choose a period when the team can tolerate a short interruption. Explain when edits to the old system should stop, how late changes will be collected and who approves the new CRM for everyday use. A final export may be needed to capture changes made since the pilot.
Define rollback triggers, such as missing relationships or failed critical integrations. Record where new activity will be captured if the launch is paused. Keep the old system available under an appropriate access arrangement until the agreed checks pass, then remove obsolete integrations and permissions through a planned cleanup.
7. Budget for the work after the import
Allow time for permissions, dashboards, forms, user training and integration repair. A low subscription price can be outweighed by avoidable rework. Compare migration support, export options and ongoing ownership alongside the subscription in your software procurement checklist.
Before buying, test the intended plan's import capabilities rather than relying on a sales demonstration of a higher tier. Our software trial checklist can help you turn that evaluation into clear pass-or-fail criteria.
CRM migration FAQs
How long does a CRM migration take?
There is no reliable universal timeline. A simple contact import is different from a migration involving custom objects, years of activity history and several integrations. Estimate the work after inventorying the data and completing a pilot.
Should you migrate all historical records?
Migrate what the business needs for daily operations and reporting, and decide how other history will remain accessible. Document the reasons for keeping, archiving or excluding each record type.
When should you cancel the old CRM?
Wait until the team has validated important records, workflows, access and reports, and the agreed rollback period has ended. Confirm that any retained archive is readable and securely stored before ending access.
Next step: Create the mapping sheet before importing anything. Then explore sales software offers with a clearer picture of the migration support you actually need.