Preparing a data migration without bad surprises
The checks to run before launch, not after: a four-stage checklist for migrating your data to Odoo without losing your teams’ trust.
Why data migration derails projects
Data migration is often treated as a technical task at the end of the project: export, import, go live. Yet it is what decides whether your teams will trust the new system from day one.
Wrong customer balances, stock that doesn’t match the warehouse or duplicate contacts are enough to send everyone back to the old files.
1. Before: prepare
- Define the scopeWhich data to migrate (customers, vendors, products, balances, stock, history) and which to leave archived.
- List the sourcesEvery system, spreadsheet or export the data comes from, with its date and how reliable it is.
- Name an owner for each data typeThe person who knows whether a customer, a price or a balance is right, and who will sign off on the migration.
- Clean at the sourceDuplicates, inactive records, inconsistent formats: fix them before migrating, not after.
- Define the mapping rulesHow each field of the old system maps to Odoo: categories, taxes, units of measure, payment terms.
- Decide what to do with historyMigrate the detailed history, only opening balances, or keep the old system available read-only.
2. Trial migration: rehearse
- Migrate to a copyA first full run in a test environment, never straight into production.
- Count the recordsDo the numbers of customers, products and documents match between the source and Odoo?
- Reconcile the balancesReceivables, payables and trial balance: totals must match at the cut-off date.
- Check the stockInventory quantities and values compared with a recent count.
- Test by roleEach team runs its usual operations on the migrated data and reports what’s wrong.
- Fix the rules, then run it againAdjust the scripts or mapping rules and rerun the trial until it comes out clean.
3. Cutover: execute
- Set a cut-off dateThe point after which nothing more is entered in the old system.
- Freeze data entryDuring the final migration, nobody changes the source data.
- Replay the validated migrationThe same procedure as the trial, with no improvisation.
- Get the sign-offData owners confirm the key checks before users get access.
- Plan the rollbackWhat happens, and who decides, if a critical check fails.
4. After: consolidate
- Watch the first weeks closelyOne point of contact for reported discrepancies, and quick fixes.
- Rerun the checks at the first month-endThe first billing and closing cycle confirms the data holds up.
- Archive the old sourcesKeep a read-only copy, in line with your retention obligations, then remove write access.
In short
You can tell a good migration by one thing: on launch day, nobody feels the need to double-check the numbers in the old system. Getting there means preparing, rehearsing, then running a procedure that has already been proven.
Need an outside perspective?
We plan and run migrations from spreadsheets, separate tools or other ERPs, with validation before launch. Let’s talk about your project.
Let’s talk about your operations.
Tell us what’s slowing you down: scattered tools, an Odoo implementation that never quite stuck, or a system you’ve outgrown.A short discovery call, no sales pitch.
- 1Discovery callA short call to understand your current setup. No sales pitch.
- 2Tailored recommendationA full diagnostic or a scoped Odoo project: we tell you which, and why.
- 3A clear next stepProposal, timeline, and what success looks like. No vague “let’s circle back.”