CRM migration
Field-level mapping, validation, and rollback between RETAINUSER CRM and Nutshell. We move data and schema; workflows are rebuilt natively in Nutshell.
RETAINUSER CRM
Source
Nutshell
Destination
Compatibility
7 of 10
objects map 1:1 between RETAINUSER CRM and Nutshell.
Complexity
CModerate
Timeline
2-4 weeks
Overview
Moving from RETAINUSER CRM to Nutshell is a structural migration that maps one budget-oriented small-business CRM onto a platform with stronger integrations, more mature reporting, and a documented REST API. RETAINUSER stores Contacts, Companies, Deals, and Activities with pipeline-stage properties; Nutshell uses People (which unifies Contacts and Leads), Companies, Deals with customizable pipelines, and a Tasks-based activity model. We sequence parent records (People, Companies) before child records (Deals, Activities) to maintain relational integrity. RETAINUSER's workflow rules and email/SMS templates do not migrate as executable code; we deliver a written inventory of every automation and template for the customer's admin to rebuild in Nutshell's workflow builder. The absence of a public API endpoint reference in RETAINUSER means we rely on UI-based exports supplemented by direct API calls where available, which requires explicit customer confirmation during scoping.
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 RETAINUSER CRM object lands in Nutshell, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
RETAINUSER CRM
Contact
Nutshell
Person
1:1RETAINUSER Contacts map to Nutshell People (the unified Contact and Lead object). Standard fields (name, email, phone, address) migrate 1:1. The RETAINUSER contact-to-company linkage is preserved by resolving the company external ID on the Person record during import. Custom properties on Contacts require field-level type mapping and field name alignment against Nutshell's allowed custom field names.
RETAINUSER CRM
Lead
Nutshell
Lead or Person
1:manyRETAINUSER Leads from Facebook Forms, WhatsApp, and manual entry split into Nutshell's Lead object (for unqualified prospects) or directly into the Person object (if the lead is already vetted). We apply a split rule based on the lead status and source fields at migration time. Lead status, lead source, and owner assignment migrate as custom or standard fields on the destination record.
RETAINUSER CRM
Company
Nutshell
Company
1:1RETAINUSER Company records map directly to Nutshell Company. The company domain, industry, size, and address fields migrate 1:1. Nutshell Company records must exist before the Person import so that the person-to-company association is satisfied at the time of Person insert. We export the association table from RETAINUSER and reconstruct it in Nutshell using the company external ID.
RETAINUSER CRM
Deal
Nutshell
Deal
1:1RETAINUSER Deals map to Nutshell Deals. Pipeline stages from RETAINUSER map to Nutshell pipeline stage values that we configure before migration. Deal value, currency, expected close date, owner, and any custom properties migrate directly. Deals without an owner are flagged for the customer's admin to assign after migration.
RETAINUSER CRM
Pipeline
Nutshell
Pipeline
lossyRETAINUSER pipelines with configurable stages map to Nutshell Pipelines with stage names and order preserved. Nutshell Foundation is limited to one pipeline; Pro and above support unlimited pipelines. We configure the destination pipeline structure during schema setup and map RETAINUSER stage names to Nutshell stage keys before the Deal import begins.
RETAINUSER CRM
Activity (Call, Email, Meeting, Note)
Nutshell
Task
1:1RETAINUSER Activities (calls, emails, meetings, notes) logged against a Contact, Company, or Deal migrate to Nutshell Tasks with activity type preserved. Timestamps, owner attribution, and note body content transfer directly. Call duration and disposition migrate as custom fields on the Task. Activity linkage to the parent Person or Deal is resolved by external ID lookup at migration time.
RETAINUSER CRM
Email Template
Nutshell
Email Template
1:1RETAINUSER email templates migrate as text assets with subject line and body preserved. Merge field placeholders (RETAINUSER's proprietary syntax) are flagged and mapped to Nutshell's merge field format during the template import. We do not preserve template-to-contact associations; these are documented separately for the admin to reassign.
RETAINUSER CRM
SMS/WhatsApp Template
Nutshell
SMS Template
1:1RETAINUSER SMS and WhatsApp templates migrate as text content with character limits noted. Nutshell's Engagement Suite SMS templates use a different placeholder syntax; we transform the template bodies during import and flag any personalization tokens that require remapping. Template associations to workflows are not preserved.
RETAINUSER CRM
Custom Field
Nutshell
Custom Field
lossyRETAINUSER custom fields on Contacts, Companies, and Deals require field-level type mapping against Nutshell's custom field schema. We extract the full custom field definition including field type, picklist values, and default values, then pre-create the equivalent Nutshell custom fields before record migration. Picklist values are mapped explicitly; free-text fields map directly.
RETAINUSER CRM
User/Owner
Nutshell
User
1:1RETAINUSER Users and Deal owners map to Nutshell Users by email match. We extract the full user list with name, email, role, and active/inactive status. Inactive RETAINUSER users are flagged to be archived in Nutshell rather than migrated as active seats. Any owner without a matching Nutshell User goes to a reconciliation queue for the customer's admin to provision before the Deal import resumes.
| RETAINUSER CRM | Nutshell | Compatibility | |
|---|---|---|---|
| Contact | Person1:1 | Fully supported | |
| Lead | Lead or Person1:many | Fully supported | |
| Company | Company1:1 | Fully supported | |
| Deal | Deal1:1 | Fully supported | |
| Pipeline | Pipelinelossy | Fully supported | |
| Activity (Call, Email, Meeting, Note) | Task1:1 | Fully supported | |
| Email Template | Email Template1:1 | Fully supported | |
| SMS/WhatsApp Template | SMS Template1:1 | Fully supported | |
| Custom Field | Custom Fieldlossy | Fully supported | |
| User/Owner | User1:1 | 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.
RETAINUSER CRM gotchas
No public API documentation for direct export
Workflow automations are not directly portable
Email/SMS template merge field syntax differs from destination CRMs
Nutshell gotchas
Contact tier limits enforced on import
No bulk API endpoint requires paginated extraction
Email sequences not exportable via API
Foundation plan disables key sales features
Pair-specific challenges
Migration approach
Discovery and export method confirmation
We audit the RETAINUSER account for record counts (Contacts, Leads, Companies, Deals, Activities), active workflows, email and SMS templates, custom fields, and pipeline configuration. We also confirm the available export method for the specific account because RETAINUSER lacks a public API reference page. The discovery output is a written migration scope with record counts, an export method recommendation, and a Nutshell tier recommendation based on the customer's pipeline count and customization needs.
Data quality audit and pre-migration cleansing
We run a data quality report against the RETAINUSER export to identify duplicate Contacts, incomplete Company records, Deals without owners, and formatting inconsistencies in address and phone fields. We deliver a cleansing checklist to the customer's admin with specific merge rules for duplicates and format corrections for addresses. Cleansing happens in RETAINUSER before migration so that only clean records enter Nutshell. This step is critical for long-tail migrations where dirty data is the primary failure cause.
Schema design and Nutshell configuration
We configure the destination Nutshell schema before any data moves. This includes creating custom fields to match RETAINUSER's custom property schema, configuring pipeline stages that mirror the RETAINUSER pipeline, setting up the Person-Company association model, and creating any required Nutshell User roles. Nutshell Foundation customers migrating from multi-pipeline RETAINUSER accounts are advised to upgrade to Pro before schema setup to avoid a pipeline-structure redesign mid-migration.
Sandbox migration and reconciliation
We run a full migration into a Nutshell sandbox environment using production-like data volume. The customer's admin reconciles record counts, spot-checks 20-30 random records against the RETAINUSER source, and validates the pipeline stage mapping and person-to-company linkage. Any field mapping corrections and schema adjustments happen in the sandbox before production migration begins. This step prevents data quality issues from reaching the live Nutshell account.
Production migration in dependency order
We run the production migration in record-dependency order: Companies (parent object), People (Contacts and Leads with the split rule applied), Deals (with pipeline stage mapping and owner resolution), Activity history (Tasks via import), and Templates (with merge-field transformation). Custom fields are pre-created before record migration. Each phase emits a row-count reconciliation report before the next phase begins. We freeze RETAINUSER writes during the final migration window to capture a clean delta.
Cutover, validation, and workflow rebuild handoff
We perform a final delta migration of records modified during the cutover window, then enable Nutshell as the system of record. We deliver the workflow inventory document, the email/SMS template mapping document, and the custom field reconciliation report. We support a three-day hypercare window for reconciliation issues raised by the team. Workflow and template rebuild in Nutshell's native builder is outside the migration scope and is the customer's admin responsibility or a separate engagement.
Platform deep dives
RETAINUSER CRM
Source
Strengths
Weaknesses
Nutshell
Destination
Strengths
Weaknesses
Complexity grading
Moderate CRM migration. 5 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Moderate migration
Derived from compatibility, mapping clarity, API constraints, and data volume across RETAINUSER CRM and Nutshell.
Object compatibility
5 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
RETAINUSER CRM: Not publicly documented.
Data volume sensitivity
RETAINUSER 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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