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Solution

Data migration & deduplication

Move off spreadsheets and legacy systems into one clean, deduplicated source of truth.

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Why it matters

Years of data live in spreadsheets and an old CRM, full of duplicates and half-filled fields. A new system is only as good as the data you start it with.

  • Records spread across spreadsheets and a legacy system
  • Duplicate people and companies with conflicting details
  • Fields that don’t map cleanly between old and new
  • No confidence in which record is the “real” one
What's included

Everything you need, configured to you.

Source mapping

We map every field from each source system to the new model.

Cleanup & dedup

Duplicate detection on identifiers, name and email, with a merge workflow.

Staged migration

Data loaded in stages with validation, not one risky big-bang import.

Verification

Record counts and spot-checks so you trust what landed.

How it works

From first call to live.

01

Inventory the data

We catalogue every source and how much of it is in scope.

02

Map & clean

Fields are mapped, duplicates flagged and a merge rule agreed.

03

Migrate in stages

Data is imported in validated batches, not all at once.

04

Verify

We reconcile counts and sample records before sign-off.

Key capabilities
  • Field mapping from spreadsheets & legacy CRM
  • Deduplication on ID / name / email
  • Merge workflow for conflicting records
  • Staged, validated imports
  • Post-migration verification
In practice

A clean start, not a copy of the mess

A firm moving off a legacy CRM and a stack of spreadsheets needed the data consolidated without dragging duplicates along. We mapped every source, deduplicated on key identifiers and migrated in validated stages.

One trusted dataset from day one — no duplicate chaos carried into the new system.
FAQ

Common questions.

Spreadsheets, most legacy CRMs and other business systems — anything we can export or connect to.

Your next step

One call. A clear plan. No pitch deck.

Tell us where the friction is. We'll come back with a 1-page proposal — scope, timeline, price — within 48 hours.

connect@1base.io