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CRM Migration — HubSpot to GoHighLevel

47,000 contacts migrated with custom field remap, workflow reconstruction, and zero downtime cutover across a working business.

2024 Migration Lead GoHighLevel

HubSpotGoHighLevelCSV ETLWorkflow ReconstructionWebhook Bridges

taimoorakhtar.com/projects/hubspot-to-ghl-migration

Introduction

A US service-business client was paying $1,400/month for HubSpot Enterprise while using maybe 30% of it. They wanted to consolidate on GoHighLevel for SMS, calls, calendars, and pipelines under a single $97/month plan. The catch: 47,000 contacts, 12 active workflows, custom field history they couldn't lose, and a live sales team that couldn't tolerate downtime.

The Challenge

CRM migrations fail in predictable places: custom field type mismatches, workflow logic that doesn't translate one-to-one, association objects (HubSpot's Deals/Companies/Contacts model vs GHL's flatter contact-centric model), and the cutover moment itself. Plus the client kept making sales the entire time.

The Solution

Architected a phased migration with a dual-write bridge period: HubSpot stayed live while GHL was built in parallel. ETL ran nightly to keep GHL synced. Workflows rebuilt one-by-one with side-by-side parity testing. Cutover happened during a Sunday window with a webhook fallback to catch any straggling inbound.

Technical Deep Dive

Field schema mapping. HubSpot's custom properties mapped to GHL custom fields with type coercion (dropdowns → multi-select, datetime → date, free text → text). Mapping documented in a sheet for QA.

ETL nightly sync. Python script using HubSpot API → CSV → GHL bulk import. Ran every night at 3am. Diffed against previous run to only push changes. Took ~22 minutes for the full delta.

Workflow reconstruction. Each of 12 HubSpot workflows rebuilt in GHL with side-by-side parity. New leads triggered both systems for 3 weeks, outputs compared. Discrepancies flagged and fixed before cutover.

Cutover webhook fallback. On cutover day, HubSpot's webhooks redirected to a bridge endpoint that forwarded into GHL. Caught any inbound during the DNS-propagation window. Decommissioned 72 hours later.

Sales team training. 2-hour training session for the sales team the week before cutover. Cheat sheet for the most common HubSpot → GHL action mappings. Support channel staffed for first 2 weeks.

Key Features

47,000 contacts migrated with full custom field history
Dual-write bridge period for parity testing
Zero data loss across migration
Sub-2-hour active cutover window
Sales team productivity restored within 48 hours of cutover

Results & Impact

$1,300+/month cost savings starting month 1
Zero leads lost during cutover
Workflow parity verified across 12 active automations
Client expanded GHL deployment to 2 sister businesses within 4 months

Lessons Learned

"Migration is 60% planning, 30% testing, 10% execution. Skip the planning and you get a disaster."

"Dual-write bridge periods catch every issue you didn't think of. Always run side-by-side before cutover."

"Sales teams hate change. Front-load training and over-staff support for the first 2 weeks."

Related Work

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