CRM Migration Without Losing Your History

Most CRM migrations lose something nobody notices for months. Here is the sequence that keeps your history intact.

The pitch is always the same: export from the old system, import into the new one, done by Friday. The reality is that exports are lossy in ways vendors do not advertise, and the gaps only surface when someone needs a two-year-old email thread to settle a dispute.

What exports usually drop

• Email and call history attached to records, which frequently exports as a separate, unlinked file — or not at all.
• File attachments, often capped or excluded entirely on lower plans.
• Custom field definitions, which come across as unlabelled columns.
• Audit trails: who changed what, when. Rarely exportable, occasionally a compliance requirement.
• Automation logic, which never transfers and must be rebuilt.

The sequence that works

1. Export everything now, while you still have a paid account, and archive it untouched. This is your insurance.
2. Map fields explicitly on one page, including what will not transfer and where it will live instead.
3. Migrate a sample of 50 records and have the people who use them daily verify against the old system.
4. Run both systems in parallel for two weeks, writing to the new one and reading from either.
5. Cut over, then keep the old account read-only for one billing cycle before cancelling.

Clean on the way through

Migration is the one moment when deleting data is politically easy. Duplicates, contacts with no activity in five years, deals abandoned mid-pipeline — decide what does not come along. Importing your mess into a clean system reproduces the mess, then makes it someone else's fault.

• 2 weeks parallel running
• 50 records verified by hand first
• 1 cycle of read-only old system