Data Import That Brings Your Lead History Across Intact

Data import turns the lists you already keep into records the CRM can work with. You upload a file, tell the system what each column means, decide how it should behave when a row matches something already in the database, and let it create or update records. Nothing exotic happens. The value sits entirely in the mapping decisions, because they decide whether the CRM is useful on day one or simply a second place where messy data lives.

An import is also the moment your business rules get written down. What counts as a lead source? Who owns an unassigned enquiry? Is a person with two phone numbers one record or two? Teams that answer those questions during the import get clean reporting afterwards; teams that skip them rebuild the same list a quarter later.

1. Gather every list in one place

Collect the spreadsheets, the exhibition scans, the WhatsApp contacts someone keeps in a notes app, and the export from your previous system. Put them in one folder and note which is authoritative where they disagree.

2. Standardise the columns

Give every file the same headings for the same meaning. Phone numbers in one format, dates in one format, one value per cell. Most of the effort sits here, whichever CRM you choose.

3. Map columns to fields

Match each column to a CRM field and add custom fields only for what your business genuinely uses. Unused fields make the record harder to read for the rep working it.

4. Set the duplicate rule and the owner

Choose the match key, decide whether matches skip, update or wait for review, and set who owns the incoming records. An import that lands unassigned is an import nobody follows up.

5. Run a test batch, then the full file

Import twenty rows. Open three of them and read them as a rep would. Fix what looks wrong, then run the rest. Keep the import log so you can rerun the rejected rows once they are corrected.

Any team whose customer information lives in files rather than in a system: a distributor with a decade of buyer contacts in Excel, an agency with client lists per account manager, a clinic with appointment registers, an exporter with enquiry sheets per market. It applies equally to teams switching from another CRM, where the work is less typing and more deciding how old stage names should translate into a pipeline your team will actually use.

The alternative is not nothing. It is a slow, invisible cost: someone retyping rows, someone else keeping a parallel sheet they trust more, and a manager reconciling both before every review.

Import in order of usefulness rather than size. Contacts and companies first, because they are what reps open. Open deals second, mapped onto your live pipeline stages. Historical closed business last, or not at all if nobody will look at it.

Keep the original files safe until you are confident the import is correct, and keep read-only access to your previous system for a short handover period. Agree that from go-live day the CRM is the only place new records are created: running both in parallel for comfort is the most common reason a migration ends up half finished.

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