HRMS migration
Field-level mapping, validation, and rollback between ZingHR and Bullhorn ATS & CRM. We move data and schema; workflows are rebuilt natively in Bullhorn ATS & CRM.
ZingHR
Source
Bullhorn ATS & CRM
Destination
Compatibility
11 of 12
objects map 1:1 between ZingHR and Bullhorn ATS & CRM.
Complexity
BStandard
Timeline
4-6 weeks
Overview
Moving from ZingHR to Bullhorn is a cross-domain migration: ZingHR is a Hire-to-ReHire HCM platform covering onboarding, payroll, attendance, leave, and performance, while Bullhorn is a staffing-focused ATS and CRM built for candidate sourcing, job management, and placement tracking. The structural difference is significant — ZingHR tracks the employee lifecycle; Bullhorn tracks the recruitment cycle. We resolve this by mapping ZingHR employee records to Bullhorn Candidates, ZingHR departments to Bullhorn Corporate structure, leave balances and payroll history to Bullhorn custom objects (where your edition permits), and attendance summaries to Candidate notes or custom fields. ZingHR's Maker-Checker approval workflows, performance review goals, and custom attributes from the Attribute Master API all require explicit mapping or rebuild planning. Bullhorn workflows, automations, and Bullhorn Automation (formerly Herefish) sequences do not migrate; we deliver a written inventory for your admin to rebuild post-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 ZingHR object lands in Bullhorn ATS & CRM, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
ZingHR
Employee
Bullhorn ATS & CRM
Candidate
1:1ZingHR employee records map to Bullhorn Candidate as the primary person record. We extract personal details (name, DOB, address, contact), employment details (department, designation, date of joining, employment type), and employment history. The Bullhorn Candidate record serves as the parent for placement, attendance notes, and payroll custom fields. We map ZingHR employee status (active, on leave, separated) to Bullhorn Candidate status, and flag any ZingHR e-Separation records as inactive Candidate records with separation date preserved.
ZingHR
Department
Bullhorn ATS & CRM
Corporate (Departments)
1:1ZingHR department hierarchies map to Bullhorn Corporate records representing the customer's own organizational structure. We extract cost-center assignments and org chart reporting lines from ZingHR's organization report. Bullhorn Corporate records hold company-level details; individual department-level granularity beyond the top-level company name requires a custom field or a custom object (e.g., Internal_Department__c) if Bullhorn's standard Corporate fields are insufficient.
ZingHR
Location
Bullhorn ATS & CRM
Corporate Address or JobOrder Location
1:1ZingHR location records include geo-coordinates, address details, and location-specific configurations. We extract location names and structured address data from ZingHR's reports. Bullhorn stores addresses on Corporate records and on JobOrder records. For multi-location ZingHR customers, we map each ZingHR location to a Bullhorn Corporate address entry. Geo-coordinates are stored as custom fields on the Corporate record if Bullhorn's standard address block does not capture them.
ZingHR
Attendance Records
Bullhorn ATS & CRM
Note (on Candidate)
1:1ZingHR attendance punch-in and punch-out data in raw timestamp format is aggregated into daily attendance summaries to avoid inflating Bullhorn record counts. Aggregated summaries are stored as Note records linked to the Candidate, with the note body containing attendance statistics (days present, days absent, late arrivals, overtime hours) and the note date set to the period end date. Raw timestamp records are not individually migrated to Bullhorn because Bullhorn does not have a native attendance or time-tracking object.
ZingHR
Leave Balances
Bullhorn ATS & CRM
Custom Object (Leave_Balance__c)
1:1ZingHR leave types (earned leave, sick leave, casual leave, compensatory off) and their entitlement, accrual, used, and balance values map to a Bullhorn Custom Object (Leave_Balance__c) linked to the Candidate. Bullhorn Support must create this custom object because it is not self-service. The number of leave types drives the number of custom object instances per employee. We verify compensatory off balances in ZingHR before cut-off since some users report these do not auto-refresh correctly.
ZingHR
Payroll History
Bullhorn ATS & CRM
Custom Object (Payroll_History__c)
1:1ZingHR payslip data including earnings, deductions, and net pay per pay period maps to a Bullhorn Custom Object (Payroll_History__c) linked to the Candidate or Placement. We sequence records by pay date and handle month-end cutoffs carefully. Bullhorn does not have a native payroll object; pay rate and bill rate are stored as fields on the Placement record, but full payroll history requires the custom object. Custom Object availability is limited by Bullhorn edition: Front Office Growth/Enterprise allows 10, ATS allows 2, and ATS Growth allows 0, which constrains how many payroll periods or additional HR data types can be stored.
ZingHR
Performance Reviews
Bullhorn ATS & CRM
Custom Object (Performance_Review__c)
1:1ZingHR PMS module goal progress, ratings, and reviewer comments map to a Bullhorn Custom Object (Performance_Review__c) linked to the Candidate. We extract goal titles, alignment to business outcomes, rating values, and reviewer metadata. Bullhorn has no native performance management module; performance history is not surfaced in standard Bullhorn reporting, so the custom object provides a historical record accessible via Bullhorn search and list views. The customer's Bullhorn edition limits how many additional custom objects can be created alongside leave balance and payroll history.
ZingHR
Documents
Bullhorn ATS & CRM
ContentDocument (via Note or Attachment)
1:1ZingHR employee documents (offer letters, ID proofs, experience letters) are downloaded individually from the ESS portal and mapped to Bullhorn ContentDocument records attached via ContentDocumentLink to the Candidate. We map ZingHR document categories to Bullhorn document type values and flag any documents that exceed Bullhorn's supported attachment size limits. Documents are imported after the Candidate record is created to satisfy the parent-lookup requirement.
ZingHR
Manager Hierarchy
Bullhorn ATS & CRM
Candidate (recruiter, supervisor fields)
1:1ZingHR manager-employee associations are extracted as reporting lines and replicated in Bullhorn by populating the recruiter and supervisor fields on the Candidate record. For Bullhorn's staffing context, the manager relationship maps to the assigned recruiter on a candidate's record and the hiring manager field on related job orders. Bulk manager-change records in ZingHR that are in a pending Maker-Checker approval state are flagged during scoping and excluded from migration until the approval is completed or the admin resolves them in ZingHR before cut-over.
ZingHR
Recruitment Data (Job Postings)
Bullhorn ATS & CRM
JobOrder
1:1ZingHR Talent Acquisition job postings and active candidate pipelines map to Bullhorn JobOrder records. Each ZingHR job requisition becomes a JobOrder with status, title, description, and requirements fields populated. ZingHR candidate profiles in the recruitment pipeline map to Bullhorn JobApplication records linked to the JobOrder and Candidate. Onboarding checklists from ZingHR do not migrate as workflow items; they are documented in the handoff inventory for the customer's Bullhorn admin to recreate using Bullhorn Automation or Bullhorn Onboarding.
ZingHR
Custom Fields (Attribute Master API)
Bullhorn ATS & CRM
Custom Fields or Custom Object fields
lossyZingHR Attribute Master API exposes company-specific custom fields and units that may not map to any standard Bullhorn field. We enumerate all ZingHR custom attributes during scoping, classify them as either inline custom fields on the Candidate (if Bullhorn's available custom field slots are sufficient) or as fields within a custom object, and coordinate with Bullhorn Support for custom object setup. Picklist and formula-type custom fields in ZingHR require explicit mapping to Bullhorn picklist values or formula fields respectively.
ZingHR
ZingHR User / Owner
Bullhorn ATS & CRM
Bullhorn User
1:1ZingHR users who are active in the system map to Bullhorn User records. We extract users by email match to the Bullhorn destination environment. Any ZingHR user without a matching Bullhorn User goes to a reconciliation queue for the customer's Bullhorn admin to provision before record import resumes, because OwnerId references on Bullhorn records are required and cannot be null for most standard objects.
| ZingHR | Bullhorn ATS & CRM | Compatibility | |
|---|---|---|---|
| Employee | Candidate1:1 | Fully supported | |
| Department | Corporate (Departments)1:1 | Fully supported | |
| Location | Corporate Address or JobOrder Location1:1 | Fully supported | |
| Attendance Records | Note (on Candidate)1:1 | Mapping required | |
| Leave Balances | Custom Object (Leave_Balance__c)1:1 | Fully supported | |
| Payroll History | Custom Object (Payroll_History__c)1:1 | Mapping required | |
| Performance Reviews | Custom Object (Performance_Review__c)1:1 | Mapping required | |
| Documents | ContentDocument (via Note or Attachment)1:1 | Mapping required | |
| Manager Hierarchy | Candidate (recruiter, supervisor fields)1:1 | Fully supported | |
| Recruitment Data (Job Postings) | JobOrder1:1 | Fully supported | |
| Custom Fields (Attribute Master API) | Custom Fields or Custom Object fieldslossy | Fully supported | |
| ZingHR User / Owner | Bullhorn 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.
ZingHR gotchas
Maker-Checker workflow creates pending approval states
Reports module limits current data export to 3 months
Compensatory off balances may not auto-refresh
API authentication requires valid token and subscription name
Bullhorn ATS & CRM gotchas
ATS Growth edition has no API access
Attachments excluded from CSV bulk exports
Custom Object limits vary sharply by edition
Opportunity pipeline stages are recruitment-specific
Resume parse quality varies by document format
Pair-specific challenges
Migration approach
Discovery and scope definition
We audit the source ZingHR instance across modules in scope (HCM, payroll, attendance, leave, performance, recruitment), employee population, custom fields exposed via the Attribute Master API, active Maker-Checker workflows, and the number of leave types and payroll periods to migrate. We pair this with a Bullhorn edition assessment to determine whether Front Office Growth or Enterprise is needed to accommodate the required custom objects (leave balances, payroll history, performance reviews). The discovery output is a written migration scope document covering record counts, object-to-object mapping, and the Bullhorn edition recommendation.
Schema design and custom object coordination
We design the Bullhorn destination schema including custom fields on Candidate and JobOrder for manager relationships and location data, custom objects (Leave_Balance__c, Payroll_History__c, Performance_Review__c) with all required fields and field types, Bullhorn Field Mappings configuration for dropdown values and edit types, and Bullhorn Support coordination to pre-create custom objects before any data import. We resolve the manager hierarchy mapping by identifying which Bullhorn User each ZingHR manager maps to by email.
Sandbox migration and reconciliation
We run a full migration into a Bullhorn Sandbox environment using a representative data volume sample. The customer's staffing operations lead reconciles record counts (Candidates in, Leads in, JobOrders in, Placements in, custom object instances in), spot-checks 25-50 records against ZingHR source data, and validates that leave balances and payroll history are correctly sequenced by period. Any mapping corrections and field type adjustments happen in the Sandbox before production migration begins.
User provisioning and owner reconciliation
We extract every distinct ZingHR user referenced on employee records, manager assignments, and recruitment data and match by email against the Bullhorn destination's User table. Users without a matching Bullhorn User go to a reconciliation queue. The customer's Bullhorn admin provisions any missing Users before record import resumes, because Bullhorn OwnerId references on Candidate, JobOrder, and Placement records are required and cannot be null during data load.
Production migration in dependency order
We run production migration in dependency order: Bullhorn Users validated, then Candidate records (from ZingHR Employees), Corporate records (from ZingHR Departments), JobOrder records (from ZingHR job postings), Leave_Balance__c custom object instances (per Candidate per leave type), Payroll_History__c custom object instances (per Candidate per pay period), Performance_Review__c custom object instances (per Candidate per review cycle), documents (as ContentDocument records linked to Candidate), attendance summary notes (linked to Candidate), and manager hierarchy resolved via recruiter and supervisor fields. Each phase emits a row-count reconciliation report before the next phase begins.
Cutover, validation, and workflow handoff
We freeze writes in ZingHR during cutover, run a final delta migration of any records modified during the migration window, then enable Bullhorn as the system of record. We deliver the ZingHR workflow and automation inventory document to the customer's Bullhorn admin team with recommended Bullhorn Automation equivalents. We support a one-week hypercare window where we resolve any reconciliation issues. We do not rebuild ZingHR workflows as Bullhorn Automation inside the migration scope; that is a separate engagement or an internal admin task.
Platform deep dives
ZingHR
Source
Strengths
Weaknesses
Bullhorn ATS & CRM
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 ZingHR and Bullhorn ATS & CRM.
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
ZingHR: Not publicly documented in available API documentation.
Data volume sensitivity
ZingHR 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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