CRM migration
Field-level mapping, validation, and rollback between Corteza CRM and HighLevel. We move data and schema; workflows are rebuilt natively in HighLevel.
Corteza CRM
Source
HighLevel
Destination
Compatibility
6 of 11
objects map 1:1 between Corteza CRM and HighLevel.
Complexity
BStandard
Timeline
1-3 weeks
Overview
Moving from Corteza CRM to GoHighLevel is a migration from a self-hosted, open-source platform to a multi-tenant SaaS CRM built for agencies and SMBs. Corteza's module-based data model does not map one-to-one to GoHighLevel's Contact-Opportunity model, so we treat Corteza Leads as GoHighLevel Contacts with a lead_source tag, Corteza Accounts as GoHighLevel Locations attached to Contacts, and Corteza Opportunities as GoHighLevel Opportunities with stage mapping to GoHighLevel pipeline stages. Custom modules built in Corteza's low-code builder require a custom field strategy in GoHighLevel: personal attributes become Contact custom fields and deal-specific attributes become Opportunity custom fields. GoHighLevel distinguishes between these two types at creation and does not allow switching a field between objects after creation. We design the field partition during scoping and build the schema before any data moves. Workflows and automations from Corteza do not migrate as code; we deliver a written inventory of every active workflow for the customer's admin to rebuild in GoHighLevel's Automation builder.
Every standard and custom field arrives verified.
AI proposes the map; you confirm before any record moves.
Parent–child, lookups, and ownership stay linked.
Calls, emails, meetings — with original timestamps.
Documents, uploads, and inline notes move with the record.
Why teams make this switch
Leaving
What's pushing teams away
Choosing
What's pulling them in
Object mapping
Each row shows how a Corteza CRM object lands in HighLevel, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Corteza CRM
Lead
HighLevel
Contact (with lead_source tag)
1:1Corteza Leads are a first-class module with a separate conversion workflow. GoHighLevel does not have a separate Lead object; unqualified prospects are stored as Contacts. We migrate Corteza Leads as GoHighLevel Contacts and tag them with a lead_source custom field (value: 'Corteza Lead') so the customer's admin can identify converted versus non-converted records. If the Corteza instance used lead scoring, we map the score to a GoHighLevel Contact custom field. The Corteza conversion workflow (which creates Account, Contact, and Opportunity) is not migrated as code; we document the conversion logic for the admin to implement in GoHighLevel Automations.
Corteza CRM
Account
HighLevel
Contact (Location)
many:1Corteza Accounts are standalone company records with industry, address, and social media fields that serve as the parent entity for Contacts. GoHighLevel has no explicit Account object; company information is stored as Location records attached to the primary Contact. We migrate each Corteza Account as a GoHighLevel Contact record representing the company (using the company name as the Contact name) with a Location record containing the address and industry. The original Contact records previously linked to the Account migrate as additional Contacts under the same Location.
Corteza CRM
Contact
HighLevel
Contact
1:1Corteza Contacts represent individual people linked to a parent Account. We migrate these as GoHighLevel Contacts with the contact-account relationship preserved via Location linkage (the merged Account above). Standard fields (first name, last name, email, phone, job title) map directly to GoHighLevel Contact standard fields. Custom Contact fields from Corteza map to GoHighLevel Contact custom fields (see custom module note).
Corteza CRM
Opportunity
HighLevel
Opportunity
1:1Corteza Opportunities track sales deals with stage, amount, probability, and close date linked to an Account. We map these to GoHighLevel Opportunities, using the merged Account Contact as the primary contact on the Opportunity. Corteza dealstage maps to a GoHighLevel Pipeline stage. We configure the GoHighLevel pipeline stages to match the Corteza stage names and probabilities before migration. Deal amount and expected close date migrate as Opportunity monetary_amount and expected_close fields.
Corteza CRM
Campaign
HighLevel
Contact (tag)
1:manyCorteza Campaigns group marketing activities and track CampaignMember responses linking Contacts and Leads. GoHighLevel does not have a native Campaign object; campaign membership is tracked via Tags, custom fields, and Pipeline stages. We migrate active Campaigns as GoHighLevel Tags on the relevant Contacts and Opportunities, preserving the campaign name as the tag value. CampaignMember status (sent, responded, bounced) migrates as a Contact custom field if the customer has active campaign tracking requirements.
Corteza CRM
Case
HighLevel
Opportunity (status tag)
1:manyCorteza Cases track customer support issues with status, priority, origin, and resolution linked to Accounts and Contacts. GoHighLevel's CRM is not a full service desk; support cases are typically tracked via Opportunities with status tags or via the built-in Tasks and Appointments. We migrate Cases as GoHighLevel Opportunities with a 'Support Case' pipeline or as tagged Tasks, depending on the customer's preferred tracking method chosen during scoping. Case priority and resolution details migrate as Opportunity custom fields.
Corteza CRM
Task
HighLevel
Task
1:1Corteza Tasks can be standalone or related to any parent record (Lead, Account, Contact, Opportunity). Each task has status, due date, assignee, and description. We migrate Tasks as GoHighLevel Tasks with status (open, complete), due date, and description preserved. Task assignment migrates by resolving the Corteza assignee to a GoHighLevel User by email match. Parent-record linkage migrates via GoHighLevel's Opportunity and Contact lookup fields.
Corteza CRM
Event
HighLevel
Appointment
1:1Corteza Events represent calendar items (meetings, calls) related to any CRM record, storing datetime, duration, organizer, and attendee references. We migrate Events as GoHighLevel Appointments with start time, end time, location, and description preserved. Attendee references migrate as related Contact lookups. Note that GoHighLevel's Appointment scheduling (Calendar feature) is separate from migrated Event records; we migrate the calendar content but do not configure GoHighLevel's Availability settings.
Corteza CRM
Custom Module (personal attributes)
HighLevel
Contact Custom Field
lossyCorteza's low-code module builder can create entirely custom modules beyond the standard CRM set. Personal attributes (lead type, birthday, preferred contact method, referral source) that were stored in Corteza custom modules map to GoHighLevel Contact custom fields. We design the Contact custom field schema during scoping: field types are matched (text, number, date, dropdown) and fields are created in GoHighLevel before migration. Note: GoHighLevel Contact custom fields cannot be switched to Opportunity custom fields after creation, so the field partitioning decision is made during scoping.
Corteza CRM
Custom Module (deal attributes)
HighLevel
Opportunity Custom Field
lossyCorteza custom modules storing deal-specific attributes (budget range, urgency, timeline to close, property type) map to GoHighLevel Opportunity custom fields. We create the GoHighLevel Opportunity custom fields before migration, matching Corteza field types to GoHighLevel supported types (text, number, date, dropdown, multi-select). The Opportunity custom fields appear within the Opportunity record and are used in pipeline views and Opportunity-level automations.
Corteza CRM
Files and Attachments
HighLevel
Contact / Opportunity attachments
1:1Corteza file fields store attachments per module. GoHighLevel supports file attachments on Contacts and Opportunities via its native file storage. We extract files from Corteza module records and attach them to the corresponding GoHighLevel Contact or Opportunity records. Folder structure from Corteza does not map directly to GoHighLevel's flat file organization; files are attached without the original folder hierarchy. We flag any file attachment exceeding GoHighLevel's size limits for the customer's admin to handle separately.
| Corteza CRM | HighLevel | Compatibility | |
|---|---|---|---|
| Lead | Contact (with lead_source tag)1:1 | Fully supported | |
| Account | Contact (Location)many:1 | Fully supported | |
| Contact | Contact1:1 | Fully supported | |
| Opportunity | Opportunity1:1 | Fully supported | |
| Campaign | Contact (tag)1:many | Fully supported | |
| Case | Opportunity (status tag)1:many | Fully supported | |
| Task | Task1:1 | Fully supported | |
| Event | Appointment1:1 | Fully supported | |
| Custom Module (personal attributes) | Contact Custom Fieldlossy | Fully supported | |
| Custom Module (deal attributes) | Opportunity Custom Fieldlossy | Fully supported | |
| Files and Attachments | Contact / Opportunity attachments1:1 | Mapping required |
Gotchas + challenges
Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.
Corteza CRM gotchas
Namespace export fails on orphaned page references
Workflow automation breaks after restore or upgrade
Field-level security does not cover all access scenarios
Federation is experimental and not production-ready
No publicly documented API rate limits
HighLevel gotchas
Sub-account architecture creates isolated data silos per client
Usage-based telecom and AI costs are not in the subscription price
Workflows have no native equivalent in most destination CRMs
API rate limits cap bulk migration throughput at 100 requests per 10 seconds per sub-account
White-label configuration and branding assets do not export via API
Pair-specific challenges
Migration approach
Discovery and instance audit
We audit the source Corteza instance: namespace structure, module definitions, custom module field inventory, workflow list, active user count, and record volume across Leads, Accounts, Contacts, Opportunities, Campaigns, Cases, and Tasks. We also audit for orphaned page references that would block namespace export and document any file attachment volume. The discovery output is a written migration scope that defines the field partition between Contact and Opportunity custom fields in GoHighLevel, the pipeline stage mapping, and the workflow inventory requiring rebuild.
GoHighLevel sub-account and schema design
We create the GoHighLevel destination structure: sub-account provisioning (if managing multiple client locations), pipeline configuration with stages mapped from Corteza deal stages, Contact custom fields (from Corteza Leads and personal custom module attributes), and Opportunity custom fields (from Corteza Opportunities and deal-specific custom module attributes). We configure Location records to represent Corteza Accounts. Schema design is validated in a GoHighLevel sandbox or trial account before production migration begins.
Corteza data extraction and file download
We extract records from Corteza via the JSON API (authenticated via OIDC) in dependency order: Leads, Accounts (for Location merge planning), Contacts (with parent Account reference resolved), Opportunities (with Account and Contact lookups resolved), Campaign members, Cases, Tasks, Events, and custom module records. Files and attachments are downloaded from Corteza file fields. The orphaned page reference audit is performed against the namespace before extraction begins to avoid export stalls.
Data transformation and field mapping
We transform the extracted data: Corteza Leads become GoHighLevel Contacts tagged as leads; Corteza Accounts become GoHighLevel Contacts with Location records; Corteza Contacts attach to the corresponding Location; Corteza Opportunities map to GoHighLevel Opportunities with stage names aligned to the configured pipeline. Custom module attributes are partitioned into Contact or Opportunity custom fields based on the scoping decision. Email addresses are validated and deduplicated against existing GoHighLevel records if any pre-existing data exists.
Production migration and reconciliation
We run production migration in dependency order: Location records (from Corteza Accounts), Contact records (from Corteza Leads and Contacts with Location linked), Opportunities (with Contact and pipeline stage resolved), Campaign tags, Case records, Tasks, Events, and custom field values. Each phase emits a row-count reconciliation report. Files and attachments are uploaded to the corresponding Contact or Opportunity record. Owner assignment resolves by email match to GoHighLevel Users; any unmatched owners are flagged for admin provisioning.
Cutover, validation, and workflow rebuild handoff
We freeze Corteza writes during cutover, run a final delta migration of any records modified during the migration window, and hand off GoHighLevel as the system of record. We deliver the Corteza workflow inventory document with each workflow's trigger, conditions, and recommended GoHighLevel Automation equivalent. We do not rebuild workflows as GoHighLevel Automations inside the migration scope; that is a separate engagement or an internal admin task. We support a one-week hypercare window for reconciliation issues raised by the customer's team.
Platform deep dives
Corteza CRM
Source
Strengths
Weaknesses
HighLevel
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 1 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Corteza CRM and HighLevel.
Object compatibility
1 of 8 objects need a mapping; the rest are 1:1.
Field mapping clarity
Field mapping is derived from defaults — final spec confirmed during the sample migration.
Timeline complexity
8-object category — typical timelines run 2–7 days end-to-end.
API constraints
Corteza CRM: Not publicly documented.
Data volume sensitivity
Corteza CRM doesn't expose a bulk API — REST + parallelization used for high-volume runs.
Estimator
Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.
Step 1
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FAQ
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