Data Migration
Legacy to live
Field-level mapping signed off
Attachments and files included
Dry runs until the counts match
Rollback plan before cutover
Mapping
Mapped before it moves
Every field in the legacy system gets a written destination, a rule, and an owner before a single record moves. The mapping sheet is the contract for the whole migration, and your team signs it before we run anything.
An excerpt from a real sheet: five of the two hundred and forty fields we mapped for a payroll move.
SOURCE
TARGET
Quality
Cleansed on the way through
Migration is the one moment every record passes through your hands. We use it to fix what years of manual entry broke.
BEFORE · AS EXPORTED
name: SMITH, j.
phone: 555.0142 cell?
dept: Sales (OLD, do not use)
email: JSMITH@ACME.LOCAL
AFTER · AS LOADED
name: Jane Smith
phone: (555) 014-2000 · mobile
dept: Revenue
email: jsmith@acme.com
Reconciliation
Every field accounted for
You see the mapping sheet before cutover and the reconciliation after it. Nothing moves on trust.
LEGACY_ACCT.CUST_NO
Account.AccountNumber
48,210
Reconciled
LEGACY_ACCT.NAME
Account.Name
48,210
Reconciled
LEGACY_CONTACT.EMAIL
Contact.Email
91,847
Reconciled
LEGACY_ORD.CREATED
Order.CreatedDate
312,559
Reconciled
LEGACY_NOTES.BLOB
ContentNote.Body
7,204
Needs review
Cutover
Dry run to cutover
We rehearse the whole migration against a copy of production until the run is boring. Then we schedule the real one for a window your business barely notices.
01
Dry run
Full migration into a staging tenant, timed and reconciled.
02
Sign-off
Your owners check their own numbers and sign the ledger.
03
Cutover
The rehearsed run, executed in an agreed window with a freeze on writes.
ROLLBACK PLAN
If any reconciliation check fails during the window, we restore the target from the pre-run snapshot and the old system keeps running. No partial states.
