CRM migration
Field-level mapping, validation, and rollback between LeadSimple and Twenty CRM. We move data and schema; workflows are rebuilt natively in Twenty CRM.
LeadSimple
Source
Twenty CRM
Destination
Compatibility
13 of 14
objects map 1:1 between LeadSimple and Twenty CRM.
Complexity
CModerate
Timeline
48–72 hours
Overview
LeadSimple is a property management CRM with pipeline-driven lead tracking, process automation, and VoIP integration built for property managers. Twenty CRM is a modern open-source CRM that stores contacts as People, organizations as Companies, and deals as Opportunities with a flexible data model supporting unlimited custom fields. The two platforms share a pipeline-stage concept but diverge significantly in object naming, field conventions, and how property-specific data (Property Type, Occupancy, Annual Contract Value, Number of Units) is stored. FlitStack AI reads LeadSimple via its API and CSV export endpoints, extracts leads with their pipeline stage and property associations, maps contact and company records to Twenty People and Companies, and loads property data as Opportunities with type-aware custom fields. Activity history (calls, emails, texts) requires separate API calls per record since LeadSimple's bulk export omits activities. Workflows, processes, and process custom fields are documented for rebuild in Twenty's workflow builder. The migration runs against Twenty's REST and GraphQL API with bulk operations for large datasets and a delta-pickup window capturing in-flight changes during cutover.
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 LeadSimple 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.
LeadSimple
Lead (LeadSimple Pipeline Record)
Twenty CRM
Person + Opportunity
1:manyLeadSimple leads bundle contact info, property details, and deal stage into one record. FlitStack AI splits this into a Twenty Person record for the contact fields and an Opportunity record for the property data and pipeline stage. The Opportunity links back to the Person via the opportunities array. This preserves the lead's identity and deal value in the correct Twenty objects.
LeadSimple
Lead Name (contact full name)
Twenty CRM
Person.name
1:1LeadSimple's Lead Name field holds the full contact name. Twenty Person requires a name object with firstName and lastName or a displayName. FlitStack parses the full name, splitting on the first space; names without a space land in firstName with lastName blank. Original Lead Name preserved in a custom text field for reference.
LeadSimple
Email Address
Twenty CRM
Person.email
1:1LeadSimple email maps directly to Twenty Person email field. Email serves as the unique identifier for Person-to-Person deduplication and for resolving workspace member relations during import. Bounced or invalid emails flagged in a custom field for post-migration cleaning. Teams should verify email deliverability status in LeadSimple before migration to ensure active addresses transfer cleanly without bounced-flag overrides.
LeadSimple
Combined Phone Numbers
Twenty CRM
Person.phone + Person.phone (additional)
1:1LeadSimple's Combined Phone Numbers concatenates multiple phone types into one field. FlitStack parses and splits by type label (Cell, Work, Home) into Twenty Person.phone primary and phone (additional) fields. If parsing fails, the full string lands in phone with a warning flag.
LeadSimple
Property Type
Twenty CRM
Opportunity.customPropertyType
1:1Property Type (e.g., Single Family, Multi Family, Commercial) has no Twenty native equivalent. FlitStack creates a custom pick-list field (customPropertyType__c) on Opportunity, populates with LeadSimple's values, and maps the pick-list options during migration. Teams must configure field visibility in Twenty's data model settings.
LeadSimple
Annual Contract Value
Twenty CRM
Opportunity.amount
1:1LeadSimple Annual Contract Value maps directly to Twenty Opportunity.amount as a currency field. This is the primary deal-value field in Twenty's pipeline view. Values preserved as-is; null ACV records land with amount = 0 and a note flagging the missing value.
LeadSimple
Pipeline Stage
Twenty CRM
Opportunity.stage
1:1LeadSimple Pipeline Name and Stage Name combine into a stage value. FlitStack maps stage names to Twenty Opportunity.stage pick-list values. New stage options created in Twenty's data model to match LeadSimple's exact stage names before import. Stage probabilities re-applied from LeadSimple stage configuration as custom number fields.
LeadSimple
Tag List
Twenty CRM
Person.customTags + Opportunity.customTags
1:1LeadSimple Tag List is a comma-separated string per lead. FlitStack creates a custom text array field (customTags__c) on both Person and Opportunity, populating with LeadSimple's exact tags. Tag filtering in Twenty's view builder lets teams replicate LeadSimple's tag-based segmentation. Multi-value tags are preserved as array elements with original casing intact for accurate reporting.
LeadSimple
Assigned To (Owner)
Twenty CRM
Person.workspaceMember + Opportunity.workspaceMember
1:1LeadSimple Assigned To references a user. FlitStack resolves by email match against Twenty workspace members. Unmatched owners flagged before migration; teams either invite them to Twenty first or assign to a fallback workspace member. The workspace member relation links the Person and Opportunity to the correct Twenty user.
LeadSimple
Source Name + Referrer Name
Twenty CRM
Person.customSource + Opportunity.customSource
1:1LeadSimple tracks lead Source and Referrer as separate fields. FlitStack creates custom text fields on Opportunity (customSource__c, customReferrer__c) and populates from the export. These drive source reporting in Twenty's pipeline views and can be used for lead attribution analysis. Teams should audit source and referrer field values during discovery to identify all unique values that need corresponding pick-list options or custom field configurations in Twenty.
LeadSimple
Company (if linked in LeadSimple)
Twenty CRM
Company
1:1LeadSimple lead records sometimes link to a Company object. When present, the Company maps directly to a Twenty Company record. The Person links to the Company via Person.companyId. Companies without contacts land as standalone records for future association. During migration, FlitStack validates that all LeadSimple company IDs have corresponding records and flags any orphaned references for manual resolution before the People import begins.
LeadSimple
Occupancy
Twenty CRM
Opportunity.customOccupancy
1:1Occupancy field (e.g., Occupied, Vacant, Under Renovation) has no native Twenty equivalent. FlitStack creates a custom pick-list field (customOccupancy__c) on Opportunity with values matching LeadSimple's pick-list. This drives vacancy-rate reporting in Twenty's pipeline dashboards. Teams should audit all LeadSimple occupancy values during discovery to ensure all active statuses transfer and unused values are excluded from the pick-list configuration to keep the field clean.
LeadSimple
Number of Units
Twenty CRM
Opportunity.customUnits
1:1Number of Units per property record maps to a custom integer field (customUnits__c) on Opportunity. This is critical for property managers tracking portfolio size per deal. Values preserved as integers; null values flagged for manual review post-migration. Teams should verify unit counts in LeadSimple before migration to ensure data accuracy and identify any non-numeric values requiring normalization during the import process.
LeadSimple
Cost
Twenty CRM
Opportunity.customCost
1:1LeadSimple Cost field (likely property management cost or deal cost) maps to a custom currency field (customCost__c) on Opportunity. FlitStack preserves the decimal precision and currency label. Teams use this for margin analysis in Twenty reporting. Currency formatting should be verified during test migration to ensure consistent display across all records and alignment with team preferences for regional number formats.
| LeadSimple | Twenty CRM | Compatibility | |
|---|---|---|---|
| Lead (LeadSimple Pipeline Record) | Person + Opportunity1:many | Fully supported | |
| Lead Name (contact full name) | Person.name1:1 | Fully supported | |
| Email Address | Person.email1:1 | Fully supported | |
| Combined Phone Numbers | Person.phone + Person.phone (additional)1:1 | Fully supported | |
| Property Type | Opportunity.customPropertyType1:1 | Fully supported | |
| Annual Contract Value | Opportunity.amount1:1 | Fully supported | |
| Pipeline Stage | Opportunity.stage1:1 | Fully supported | |
| Tag List | Person.customTags + Opportunity.customTags1:1 | Fully supported | |
| Assigned To (Owner) | Person.workspaceMember + Opportunity.workspaceMember1:1 | Fully supported | |
| Source Name + Referrer Name | Person.customSource + Opportunity.customSource1:1 | Fully supported | |
| Company (if linked in LeadSimple) | Company1:1 | Fully supported | |
| Occupancy | Opportunity.customOccupancy1:1 | Fully supported | |
| Number of Units | Opportunity.customUnits1:1 | Fully supported | |
| Cost | Opportunity.customCost1:1 | 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.
LeadSimple gotchas
Notes and Activities excluded from bulk CSV export
No public API — migration requires workaround
Contact-level custom fields can vary per owner on the same property
Per-door pricing on Operations layer is a billing artifact not migratable
Workflow automation must be manually rebuilt on the destination
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
Audit LeadSimple data and build field mapping plan
FlitStack AI connects to LeadSimple via API and exports all leads, contacts, companies, and process records. We review the full schema, identify active custom fields, and audit activity history availability. The result is a field mapping document that specifies every source field, its Twenty destination (standard or custom), mapping type (direct, value-mapping, custom-field-required), and any transformation logic. Custom field definitions (type, pick-list values, required flags) are documented for Twenty-side creation before import begins.
Create Twenty custom fields and configure data model
Before data moves, your team creates the custom fields in Twenty (Settings → Data Model): customPropertyType__c (pick-list), customOccupancy__c (pick-list), customUnits__c (integer), customCost__c (currency), customTags__c (text array), customSource__c (text), customReferrer__c (text), customStageStatus__c (text). FlitStack delivers an exact step-by-step checklist with field names, types, and pick-list values. Companies are created or imported first so Person-to-Company relations resolve correctly when People records land. Workspace members are invited and confirmed active so owner resolution works on day one.
Run test migration with field-level diff
A representative slice of 200–500 records migrates first: leads spanning multiple stages, records with and without property data, records with tags, and records owned by users likely to need email resolution. FlitStack generates a field-level diff comparing source and destination values for every mapped field. You verify that property types, occupancy values, ACV amounts, and stage names appear correctly in Twenty. Owner resolution is validated — any unmatched owners are flagged with the original LeadSimple owner name and email so your team can invite them to Twenty or assign a fallback. Activity supplemental imports (calls, emails, texts) are tested for a sample of records.
Full migration with delta-pickup window
The complete LeadSimple dataset migrates: Companies → People → Opportunities → Tasks in sequence. A delta-pickup window (typically 24–48 hours) runs after the full load, capturing any records created or modified in LeadSimple during the cutover. All operations are logged in FlitStack's audit trail with source record ID, destination record ID, field counts, and error details. One-click rollback reverts all migrated records if reconciliation fails. Post-migration, FlitStack delivers a reconciliation report showing record counts by object, unmatched owners, dropped activities, and any custom field values that failed validation.
Workflow and process rebuild handoff
LeadSimple workflows, process automation templates, and conditional logic are documented as a rebuild reference package. FlitStack exports workflow definitions (triggers, conditions, actions, stage-change rules) in a structured format. Your Twenty admin uses this to rebuild equivalent automations in Twenty's workflow builder. The rebuild package covers process types, autopilot rules, and any conditional field logic tied to property data. FlitStack does not migrate workflows — they require manual rebuild in Twenty due to fundamental differences in trigger and action architecture between the two platforms.
Platform deep dives
LeadSimple
Source
Strengths
Weaknesses
Twenty CRM
Destination
Strengths
Weaknesses
Complexity grading
Moderate CRM migration. 1 of 8 objects need a manual workaround.
Overall complexity
Moderate migration
Derived from compatibility, mapping clarity, API constraints, and data volume across LeadSimple and Twenty CRM.
Object compatibility
1 of 8 objects need a manual workaround.
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
LeadSimple: Not publicly documented.
Data volume sensitivity
LeadSimple 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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