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Montandon Ltd
Data Engineering

Move your data
without the headache.

Migrating CRMs, merged websites, or legacy databases? We handle complex ETL (Extract, Transform, Load) projects with zero downtime and zero data loss.

The Danger

"Let's just export as CSV..."

That's how you lose 5 years of customer notes. Data migration is risky. Fields don't match, character encodings break, and relationships get severed.

The Setup Trap

Most automated migration tools only move the basics (Contact Name). They miss the important stuff (Email History, Deal Stage, Custom Notes).

Our 4-Step Guarantee

  • 1

    Audit & Map

    We map every single field from Source A to Destination B. We identify potential conflicts before touching a byte.

  • 2

    Test Run

    We migrate a 5% sample size to verify the integrity of the data structure.

  • 3

    Full Migration

    We run the script on secure servers. We can often do this over a weekend to minimise disruption.

  • 4

    Validation

    We provide a report showing Record Count In vs Record Count Out. 100% accountability.

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We handle the edge cases.

Generic tools fail when data gets messy. We write custom Python/Node.js scripts to handle:

  • Merging duplicate records based on fuzzy logic
  • Preserving original 'Created Date' timestamps
  • Mapping 'Dropdown' values to new schemas
  • Attaching files (PDFs) to the correct contact
# Relationship Mapping Example
const
transformRecord = (oldUser) => {
return
{
email: oldUser.u_email,
full_name: `${oldUser.fname} ${oldUser.lname}`,
company_id: await findNewCompanyId(oldUser.c_name),
// Custom logic for legacy status codes
status: statusMap[oldUser.status_id] || 'archive'
}
}
Options

Why hire an expert?

You can try it yourself, but the clean-up cost is usually higher than doing it right the first time.

DIY / CSV Import
Automated SaaS Tool
Montandon Managed
Cost
Free (Time cost)
Low (£)
Medium (££)
Data Mapping
Manual
Automated (Basic)
Custom Scripted
Associated Notes/Calls
File Attachments
Downtime Required
Days
Hours
None (Background)
Post-Migration Audit
Supported Systems

We move it all.

We are platform agnostic. If it has an API or a database export, we can move it.

Backup & Move
SQL / MySQL Databases
Zoho / HubSpot / Salesforce
WordPress / WooCommerce
CSV / Excel Cleaning
GDPR Compliance Check
Ongoing Sync Scripts

Frequently Asked Questions

Simple migrations take 3-5 days. Complex enterprise migrations usually take 2-4 weeks, including the audit and testing phases.

No. We run the migration in parallel. You keep working in your old system until the 'Cutover Date', where we switch you to the new one.

Yes. This is the hardest part of migration, but we use special API endpoints to re-create historical activities on the correct timeline.

We create a 'Mapping Document' before we start. If you have a field called 'Job Title' in one and 'Role' in another, we write a rule to map them together.

Yes. We sign an NDA. All scripts run on encrypted servers and are deleted 7 days after project completion.