HRMS migration
Field-level mapping, validation, and rollback between Unicorn ATS and Recruit CRM & ATS. We move data and schema; workflows are rebuilt natively in Recruit CRM & ATS.
Unicorn ATS
Source
Recruit CRM & ATS
Destination
Compatibility
8 of 10
objects map 1:1 between Unicorn ATS and Recruit CRM & ATS.
Complexity
BStandard
Timeline
6-10 weeks
Overview
Switching from Unicorn ATS to Recruit CRM addresses two structural limitations of pure ATS platforms: fragmented candidate-client data and opaque pricing. Recruit CRM combines ATS and CRM in one unified database, eliminating the context loss that occurs when candidate notes live in one system and client relationship data in another. The migration challenge centers on Unicorn ATS's activity log export behavior — notes and email history typically export as flat CSV with no candidate record linkage, requiring a fuzzy-match re-association process before import into Recruit CRM. We resolve this during the data-cleaning phase, flag any unattached records, and give the customer a preview before committing to migration scope. Workflows, automations, and custom reporting configurations do not migrate; we deliver a written inventory of these for the customer's admin to rebuild in Recruit CRM'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 Unicorn ATS object lands in Recruit CRM & ATS, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Unicorn ATS
Candidate
Recruit CRM & ATS
Contact
1:1Unicorn ATS candidate records map to Recruit CRM Contact records, which serve as the primary candidate entity in Recruit CRM's unified ATS-CRM model. We extract candidate name, contact information, resume files, application date, source channel, and pipeline stage assignment. Custom fields added to candidates in Unicorn ATS migrate to Recruit CRM's custom field model, preserving field type (text, number, date, picklist) and validation rules. We use email address as the primary dedupe key during import.
Unicorn ATS
Job Requisition
Recruit CRM & ATS
Job
1:1Job records from Unicorn ATS (requisition title, department, location, employment type, posting dates, hiring manager assignment) map directly to Recruit CRM Job records. We preserve the job status (open, closed, on hold) and any custom fields attached to the job object. Job-to-candidate associations are resolved during the candidate import phase using the Unicorn ATS application record linking.
Unicorn ATS
Pipeline Stage
Recruit CRM & ATS
Pipeline Stage
lossyUnicorn ATS pipeline stages define the candidate journey from application through offer and hire. We extract the current stage configuration (stage names, order, and any automation rules) and map them to Recruit CRM's pipeline stage model. Stage names are recreated in Recruit CRM, and stage order is preserved. Automation rules attached to stages (such as automatic email triggers) are documented for manual rebuild in Recruit CRM's workflow builder since automation rules do not migrate as code.
Unicorn ATS
Employee Record
Recruit CRM & ATS
Employee / Contact
lossyIn HRMS contexts, employee records distinguish from candidate profiles. Unicorn ATS employee records (start date, department, job title, manager assignment, employment status, compensation) map to Recruit CRM Contact records with a status flag distinguishing employees from candidates. If the customer uses Recruit CRM's HRMS module, employee records map to the equivalent employee object. We preserve the employment status and start date fields during migration.
Unicorn ATS
Custom Field (Candidates, Jobs, Employees)
Recruit CRM & ATS
Custom Field
1:1Custom fields added by the customer to Candidates, Jobs, or Employee records in Unicorn ATS require explicit field-level mapping. We export custom field definitions alongside their values, document field types and validation rules, and recreate them in Recruit CRM's corresponding objects before data import. Multi-select picklist values, date formats, and numeric formats are normalized during the transform phase to match Recruit CRM's field type constraints.
Unicorn ATS
Interview and Schedule
Recruit CRM & ATS
Calendar Event
1:1Interview records in Unicorn ATS include scheduled date and time, interviewer assignments, interview type, scorecards, and outcome notes. We map these to Recruit CRM's calendar event records linked to the corresponding Contact (candidate) and Job. Scorecard responses migrate to custom fields on the candidate record. We preserve the scheduled date and time ordering during import.
Unicorn ATS
Offer and Approval
Recruit CRM & ATS
Offer
1:1Offer records in Unicorn ATS include compensation details, start date, offer status, and approval workflow history. These map to Recruit CRM's Offer object if the customer's Recruit CRM plan includes offer management. Approval routing logic from Unicorn ATS is documented separately for the customer's admin to rebuild in Recruit CRM's approval workflow configuration. We preserve offer status and compensation details as structured fields.
Unicorn ATS
Activity Note and History
Recruit CRM & ATS
Activity Log Entry
1:1Recruiter notes, email logs, and general activity history attached to candidates in Unicorn ATS require special handling. Most ATS platforms, including Unicorn ATS, export activity notes as a flat CSV file with no linkage to the candidate record ID in an automatically re-associable format. We run a fuzzy-match process using candidate name, email, and application date to reattach historical activity to the correct Contact record in Recruit CRM. We flag any unmatched activity records before committing to migration scope and present the customer with a preview of unattached records. This step is the most migration-specific gotcha for this pair.
Unicorn ATS
Attachment and Resume
Recruit CRM & ATS
Document / Resume
1:1Resume files and candidate attachments from Unicorn ATS migrate to Recruit CRM's document attachment model linked to the corresponding Contact record. We preserve file names, upload dates, and file types. Binary file transfer is handled separately from the CSV data migration using Recruit CRM's file upload API. We document the file format support (PDF, DOCX, etc.) against Recruit CRM's accepted formats.
Unicorn ATS
User and Owner
Recruit CRM & ATS
User
1:1Unicorn ATS users and owners referenced on candidate, job, and activity records map to Recruit CRM User records. We resolve users by email match and preserve the user's display name and role assignment. Any Unicorn ATS user without a matching email in Recruit CRM goes to a reconciliation queue for the customer's admin to provision before record import resumes.
| Unicorn ATS | Recruit CRM & ATS | Compatibility | |
|---|---|---|---|
| Candidate | Contact1:1 | Fully supported | |
| Job Requisition | Job1:1 | Fully supported | |
| Pipeline Stage | Pipeline Stagelossy | Fully supported | |
| Employee Record | Employee / Contactlossy | Fully supported | |
| Custom Field (Candidates, Jobs, Employees) | Custom Field1:1 | Fully supported | |
| Interview and Schedule | Calendar Event1:1 | Fully supported | |
| Offer and Approval | Offer1:1 | Fully supported | |
| Activity Note and History | Activity Log Entry1:1 | Fully supported | |
| Attachment and Resume | Document / Resume1:1 | Fully supported | |
| User and 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.
Unicorn ATS gotchas
Activity logs export as flat CSV, losing record associations
Migration timeline scales non-linearly with data volume
Dirty data imported from source pollutes the destination
Recruit CRM & ATS gotchas
API rate limits are license-scaled and can throttle bulk migration
Custom field schemas vary per organization and require field-level mapping
Files and email attachments require separate extraction and re-upload
Email sequences and automation logic do not transfer between platforms
Pair-specific challenges
Migration approach
Discovery and data audit
We audit the source Unicorn ATS environment across candidate volume, job requisition count, pipeline stage configuration, custom field definitions, user count, and activity history volume. We extract a sample export to assess data quality, identify duplicate candidates, and determine the proportion of activity records that will require fuzzy-match re-association. We also confirm the customer's Recruit CRM plan tier and identify any features that require plan upgrades before migration scope is finalized.
Data cleaning and deduplication
We provide a deduplication report identifying duplicate candidate profiles, outdated job requisitions, and records missing critical fields (email address for activity re-association, status for pipeline mapping). The customer reviews and approves the cleanup actions. This phase typically runs for a minimum of two weeks and must be completed before the migration window opens. We do not migrate records that the customer has flagged for exclusion.
Schema design and Recruit CRM preparation
We design the destination schema in Recruit CRM, including custom field creation, pipeline stage configuration, and user provisioning. Custom fields from Unicorn ATS are mapped to their Recruit CRM equivalents with type normalization. Pipeline stages are recreated in Recruit CRM's stage builder. User accounts are provisioned in Recruit CRM with email-matched ownership so that OwnerId references are satisfied at migration time.
Activity history re-association
We extract activity log data from Unicorn ATS and run the fuzzy-match re-association process against the cleaned candidate dataset. Using candidate name, email, and application date as matching criteria, we attach historical activity to the correct Recruit CRM Contact record. We produce an unattached records report showing any activity that could not be matched with confidence. The customer reviews this report and decides whether to manually link unmatched records post-migration or accept them as-is.
Production migration in dependency order
We run production migration in record-dependency order: Users and Owners first (validated), then Job requisitions, then Candidates (with email dedupe applied), then Interview and Offer records, then Activity history (re-associated), then Attachments and Resume files. Each phase emits a row-count reconciliation report before the next phase begins. We pause writes in Unicorn ATS during the cutover window and run a final delta migration of any records modified during the migration window.
Cutover, validation, and workflow handoff
We enable Recruit CRM as the system of record after the final reconciliation report is signed off. We deliver the automation inventory document to the customer's admin team for rebuild in Recruit CRM's workflow builder. We support a one-week hypercare window where we resolve any data quality issues raised by the team. We do not rebuild Unicorn ATS workflows as Recruit CRM automations inside the migration scope; that work is customer-side effort documented in the handoff deliverable.
Platform deep dives
Unicorn ATS
Source
Strengths
Weaknesses
Recruit CRM & ATS
Destination
Strengths
Weaknesses
Complexity grading
Standard HRMS migration. 1 of 7 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Unicorn ATS and Recruit CRM & ATS.
Object compatibility
1 of 7 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
7-object category — typical timelines run 2–7 days end-to-end.
API constraints
Unicorn ATS: Not publicly documented..
Data volume sensitivity
Unicorn ATS 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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