CRM migration
Field-level mapping, validation, and rollback between Membrain and Twenty CRM. We move data and schema; workflows are rebuilt natively in Twenty CRM.
Membrain
Source
Twenty CRM
Destination
Compatibility
7 of 11
objects map 1:1 between Membrain and Twenty CRM.
Complexity
BStandard
Timeline
4-6 weeks
Overview
Moving from Membrain to Twenty CRM is a migration from a structured-process SaaS platform to an open-source, self-hosted CRM with a flexible custom object model. Membrain organizes B2B sales data around guided selling workflows across Companies, Contacts, Prospects, Sales Projects, and Account Growth Projects, each with their own GUID-prefixed custom field schemas. Twenty CRM uses a Company-Person-Opportunity core with support for building custom objects directly in the UI. The key challenge on the Membrain side is resolving the CustomField{GUID} naming convention before export, remapping Lite account ownership to active Full accounts, and confirming which modular products are licensed so the export schema matches what exists. On the Twenty side, all custom fields must exist in Settings before CSV import because Twenty creates records, not fields. Automations, Flows, Content Hub assets, and Tickets (add-on module) do not migrate; we deliver a written inventory of every automation and extension requiring rebuild in Twenty's workflow engine post-migration.
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 Membrain object lands in Twenty CRM, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Membrain
Company
Twenty CRM
Company
1:1Membrain Companies map directly to Twenty Companies. Standard fields (name, address, industry, website) migrate to Twenty Company fields by name match. The company domain becomes the Website field and serves as a dedupe key during import. CustomField{GUID} values on Companies resolve via the GUID-to-label lookup built from Membrain's custom field definitions during discovery. Company must import before People so the Company lookup relationship resolves on Contact insert.
Membrain
Contact
Twenty CRM
People
1:1Membrain Contacts map to Twenty People. Email address is the dedupe key; contacts with duplicate emails are merged or flagged for review based on activity recency. Standard fields (firstName, lastName, email, phone, jobTitle) map to Twenty People fields by name. The company-to-contact link migrates as the People.CompanyId lookup resolved against the imported Company records. Custom field GUIDs resolve via the lookup table; date and phone formats standardize to ISO 8601 and E.164 respectively.
Membrain
Prospect
Twenty CRM
People (or Lead if created)
1:manyMembrain Prospects live in the Prospecting product module with their own lifecycle stages distinct from Contacts. Where the customer uses Prospects as unqualified pipeline entries, we map them to Twenty People records with a custom pipeline_stage field carrying the original Prospect stage. If the customer maintains strict Contact-Prospect separation in Twenty, Prospects map to a custom Status field on People. Prospect-specific custom fields migrate to matching People custom fields in Twenty's Data Model.
Membrain
Sales Project
Twenty CRM
Opportunity
1:1Membrain Sales Projects map to Twenty Opportunities. The Sales Project's Company and primary Contact links migrate as Opportunity.CompanyId and a custom peopleId field resolved against the imported Company and People records. Stage name, probability, expected close date, and value migrate to Twenty Opportunity fields. Pipeline stage definitions require explicit mapping: Membrain's custom stage names (arbitrary per Sales Project type) map to Twenty's Opportunity stage values by position and win-rate intent.
Membrain
Account Growth Project
Twenty CRM
Custom Object (AccountGrowthProject)
1:1Membrain Account Growth Projects track expansion and account planning at the Company level with their own workflow and custom fields. Twenty does not have a native account growth or account planning object, so we create a custom AccountGrowthProject object in Twenty's Data Model before import. Custom fields from Membrain map to the new object; the project-to-Company link migrates as a CompanyId lookup. Stage and value fields map to custom fields on the new object.
Membrain
Activity (Appointments, Calls, Notes, Emails, Tasks)
Twenty CRM
Task, Note, or Event
1:1Membrain Activities migrate to Twenty Task or Note records depending on type. Appointments map to Event records with startDate, endDate, and location. Calls map to Task with a custom taskSubtype field set to 'Call' and callDuration custom fields. Notes map to Note records linked via ContentDocumentLink to the parent People or Company record. Emails and Tasks migrate as Task records. Activity-to-record links (PeopleId, CompanyId, OpportunityId) resolve against imported records by email or name match before insert.
Membrain
Ticket (add-on module)
Twenty CRM
Ticket or Custom Object
1:1Tickets are a Membrain add-on module with their own workflow stages, custom fields, and assignment rules. Twenty does not have a native ticket object in the base install. We map Tickets to a custom Ticket object created in Twenty's Data Model with custom fields for status, priority, assignee (resolved via User email match), and the parent Company or People link. If the customer does not have the Tickets module licensed, this object is absent from the export and skipped.
Membrain
User (Full accounts)
Twenty CRM
User
1:1Membrain Full User accounts map to Twenty User (Member) records. We extract owner assignments from every record type (Companies, People, Sales Projects, Activities) and match by email against the Twenty Members list. Owners without a matching Twenty User are placed in a reconciliation queue; the customer's admin provisions missing users before record import resumes. Lite accounts are flagged separately and ownership is reassigned to a designated Full user before migration.
Membrain
Team
Twenty CRM
Workspace or Custom Group
lossyMembrain Teams group users and can be assigned as record owners. Team structure is exportable, but team-to-user membership requires explicit mapping because team naming conventions differ between platforms. We export the team hierarchy as a custom CSV and map team assignments to Twenty's workspace permissions or a custom Group object depending on the customer's intended usage.
Membrain
Custom Field
Twenty CRM
Custom Field
lossyEvery Membrain custom field uses the CustomField{GUID} naming convention on each object context (Companies, Contacts, Prospects, Sales Projects, Account Growth Projects, Activities, Tickets). We query the custom field definitions first to build a GUID-to-label lookup table, then substitute human-readable field names during mapping. Before importing, all custom fields must exist in Twenty Settings Data Model; we create them via Twenty's UI or API before data import begins.
Membrain
Pipeline Stage
Twenty CRM
Opportunity Stage
lossyMembrain allows each Sales Project type to define its own stages with arbitrary names, probabilities, and step counts. We extract the complete stage definition from Membrain and map each stage to Twenty's Opportunity stage values by position and win-rate intent. Stage history that exceeds Twenty's default stage field capacity is logged as a custom activity record to preserve the audit trail.
| Membrain | Twenty CRM | Compatibility | |
|---|---|---|---|
| Company | Company1:1 | Fully supported | |
| Contact | People1:1 | Fully supported | |
| Prospect | People (or Lead if created)1:many | Fully supported | |
| Sales Project | Opportunity1:1 | Fully supported | |
| Account Growth Project | Custom Object (AccountGrowthProject)1:1 | Fully supported | |
| Activity (Appointments, Calls, Notes, Emails, Tasks) | Task, Note, or Event1:1 | Fully supported | |
| Ticket (add-on module) | Ticket or Custom Object1:1 | Fully supported | |
| User (Full accounts) | User1:1 | Fully supported | |
| Team | Workspace or Custom Grouplossy | Fully supported | |
| Custom Field | Custom Fieldlossy | Fully supported | |
| Pipeline Stage | Opportunity Stagelossy | Fully supported |
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.
Membrain gotchas
API access is a paid add-on with undocumented rate limits
Custom field GUID naming convention breaks standard field mappers
Lite accounts cannot own records or trigger automations
Modular product gating means not all features are available in every account
Sales Project stage definitions are per-pipeline and fully custom
Twenty CRM gotchas
Import order is enforced and critical
Export limited to 20,000 records and visible columns only
Soft-deleted records count toward uniqueness and trigger restores
API rate limits cap at 200 req/min on Organization tier
No native email sequences — follow-up cadences require external tools
Pair-specific challenges
Migration approach
Discovery and export schema confirmation
We audit the Membrain account across licensed products (Prospecting, Active Pipeline, Account Growth, Elevate) and add-ons (Flows, Tickets, Content Hub). We confirm which modules are active because inactive modules produce no export data. We identify all CustomField{GUID} field names by querying Membrain's custom field definitions and build the GUID-to-label lookup table. We extract all record owners, flag Lite accounts for remapping, and inventory the Sales Project pipeline stage definitions including custom stage names and probabilities.
Twenty workspace preparation
Before any data moves, we create all required custom fields in Twenty Settings Data Model. This includes custom fields matched from Membrain (resolved via the GUID lookup table), industry-standard fields missing from Twenty's base install (multiple phones, emails, jobTitle, department, website), and the AccountGrowthProject custom object with its field definitions. We also invite all team members via Settings Members so that User records exist before owner lookups are resolved during import.
Data export from Membrain
We export each object type from Membrain in dependency order: Companies (first, because People have a CompanyId lookup), People, Prospects, Sales Projects, Activities, Account Growth Projects, and Tickets. Each export is enriched with resolved field names from the GUID lookup table and includes the original Membrain owner email for User reconciliation. We run a row-count reconciliation against the expected counts per product license before proceeding to import.
Owner reconciliation and User provisioning
We extract every distinct owner email from the Membrain exports and match against the Twenty Members list. Any owner without a matching Twenty User goes to a reconciliation queue. The customer's admin provisions missing users in Twenty and confirms acceptance of the invitation. We also remap all Lite account ownership to the designated Full user. This step is blocking: OwnerId references must resolve before Opportunity and Activity imports proceed.
Production migration in dependency order
We load data into Twenty in record-dependency order: Companies first, then People (with CompanyId resolved), then Opportunities (with CompanyId and peopleId resolved), then Activities (Tasks, Events, Notes with parent lookups resolved), then Account Growth Projects (custom object with CompanyId lookup), then Tickets (custom object with assignee resolved). Each phase emits a row-count report before the next begins. We use Twenty's REST API with batch chunking and retry logic for large volumes.
Cutover, validation, and automation handoff
We freeze Membrain writes during cutover, run a delta migration of records modified during the migration window, and enable Twenty as the system of record. We deliver a reconciliation report comparing Membrain source counts to Twenty destination counts per object. We also deliver the automation inventory document listing every Membrain automation, workflow step, and Content Hub asset with recommendations for rebuilding in Twenty's workflow engine. We support a one-week post-migration window for reconciliation issues raised by the customer's team.
Platform deep dives
Membrain
Source
Strengths
Weaknesses
Twenty CRM
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 2 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 Membrain and Twenty CRM.
Object compatibility
2 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
Membrain: Not publicly documented — depends on instance type and API Add-on module.
Data volume sensitivity
Membrain 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
Pick a category, then your source and destination platforms.
Category
FAQ
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