HRMS migration
Field-level mapping, validation, and rollback between SeamlessHR and BambooHR. We move data and schema; workflows are rebuilt natively in BambooHR.
SeamlessHR
Source
BambooHR
Destination
Compatibility
7 of 10
objects map 1:1 between SeamlessHR and BambooHR.
Complexity
BStandard
Timeline
2-4 weeks
Overview
Moving from SeamlessHR to BambooHR is a record-structure migration with three areas that require explicit planning: the dual export paths for active and exited employees in SeamlessHR, the absence of built-in payroll in BambooHR (it is an add-on), and the fact that Approval Workflows do not migrate as code. SeamlessHR stores active and terminated employees in separate HRIS export paths, and we always request both to prevent orphaned compensation history. BambooHR organizes employees under a department and employment status model, and we map SeamlessHR's custom fields by extracting the source schema first and pre-creating matching fields in BambooHR before data import. Leave balances, performance reviews, and documents migrate 1:1 with field-type conversion. Workflows, approval chains, payroll run history, and recruitment workflow configurations are documented and handed off for admin rebuild.
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 SeamlessHR object lands in BambooHR, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
SeamlessHR
Employee (Active)
BambooHR
Employee
1:1Active SeamlessHR Employee records map to BambooHR Employee. We export full profile data including custom properties via the HRIS spool endpoint, map SeamlessHR fields to BambooHR field names using the documented API field list, and insert by employee number or email as the dedupe key. Any custom fields that do not exist in BambooHR are created during the schema phase before data import. Exported records include job title, department, employment status, hire date, and all custom fields on the profile.
SeamlessHR
Exited Employee
BambooHR
Employee (inactive)
1:1Exited employees use a separate export path in SeamlessHR's HRIS and must be requested explicitly alongside the active employee export. We pull terminated records with their exit date, final compensation, termination reason, and any attached documents. These map to BambooHR Employee records with employmentStatus set to Terminated and the hire and termination dates preserved. Any payroll records attached to exited profiles are flagged for compensation summary generation rather than direct migration.
SeamlessHR
Organization Structure
BambooHR
Department
1:1SeamlessHR exposes the org chart and hierarchy as a distinct object with parent-child reporting relationships. We preserve the full department tree and map each SeamlessHR department to a BambooHR Department with the correct parent-child hierarchy. The BambooHR Employee department field is populated using the resolved department ID from the imported hierarchy.
SeamlessHR
Leave Management
BambooHR
Time Off
1:1Leave balances, entitlement policies, and request history are exportable from SeamlessHR. We map leave types to BambooHR Time Off types (Annual, Sick, Personal, or custom equivalents), and migrate accrual balances as of the migration date. Pending leave requests are flagged for customer resolution before cutover; approved and taken history migrates as historical records with dates preserved.
SeamlessHR
Payroll Records
BambooHR
Compensation Summary (reference document)
lossySeamlessHR payroll runs are tied to employee records and exported separately from the HRIS module. Because BambooHR Payroll is a separate add-on product and historical payroll records are not portable between platforms, we generate a compensation summary report from SeamlessHR payroll data for the customer's records. The migration does not insert payroll run history into BambooHR as native records. If the customer activates BambooHR Payroll post-migration, historical compensation data remains in SeamlessHR or the summary document.
SeamlessHR
Requisitions
BambooHR
Job Requisition (via BambooHR ATS add-on)
1:1Job requisitions with custom fields are supported in SeamlessHR. We extract the requisition data, custom field values, and workflow stage history. Migration to BambooHR requires the BambooHR ATS add-on to be active; without it, requisitions are documented as a written inventory. If ATS is present, we create corresponding Job Openings and preserve stage names, order, and which stages each requisition has passed through.
SeamlessHR
Recruitment Workflow Stages
BambooHR
Applicant Tracking Workflow (via BambooHR ATS add-on)
1:1SeamlessHiring workflow stages export as an ordered sequence with stage names and applicant progression history. We preserve the stage sequence and applicant count per stage. If the customer does not activate BambooHR ATS, the stage workflow is documented as a reference for manual rebuild in BambooHR's ATS or a third-party ATS.
SeamlessHR
Performance Reviews
BambooHR
Performance Review
1:1Performance and potential ratings, review cycle data, and goal information are available on SeamlessHR Core tier and above. We map review period dates and rating scores to BambooHR's Performance Review structure. Rating scales may differ between platforms; we document the SeamlessHR scale and map each score to the nearest BambooHR equivalent or store the original score in a custom field for administrative reference.
SeamlessHR
Custom Fields (Employee)
BambooHR
Employee Custom Fields
lossyCustom fields on SeamlessHR Employee profiles require separate schema extraction via API before data export. We retrieve the field definition list, construct a field mapping table, create matching custom fields in BambooHR, then pull values per record. Any custom field that does not exist in BambooHR is skipped unless the customer has pre-created it. Field types (text, date, number, dropdown) are mapped to equivalent BambooHR field types.
SeamlessHR
Custom Fields (Requisition)
BambooHR
Job Requisition Custom Fields
lossyCustom fields on SeamlessHR Requisitions follow the same extraction process as Employee custom fields. We retrieve the schema, pre-create matching fields in BambooHR (requiring the ATS add-on), then migrate the values. If the customer does not activate BambooHR ATS, custom requisition fields are documented in the requisition inventory rather than migrated.
| SeamlessHR | BambooHR | Compatibility | |
|---|---|---|---|
| Employee (Active) | Employee1:1 | Fully supported | |
| Exited Employee | Employee (inactive)1:1 | Fully supported | |
| Organization Structure | Department1:1 | Fully supported | |
| Leave Management | Time Off1:1 | Fully supported | |
| Payroll Records | Compensation Summary (reference document)lossy | Mapping required | |
| Requisitions | Job Requisition (via BambooHR ATS add-on)1:1 | Mapping required | |
| Recruitment Workflow Stages | Applicant Tracking Workflow (via BambooHR ATS add-on)1:1 | Fully supported | |
| Performance Reviews | Performance Review1:1 | Mapping required | |
| Custom Fields (Employee) | Employee Custom Fieldslossy | Fully supported | |
| Custom Fields (Requisition) | Job Requisition Custom Fieldslossy | 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.
SeamlessHR gotchas
Exited employee export is a separate workflow from active employee export
Custom fields lack a standardized import template
API rate limits and bulk endpoints are not publicly documented
BambooHR gotchas
Undocumented API rate limits can trigger 503 errors
Per-employee pricing model requires active record count verification
API credentials must be sent on every request to avoid extra round trips
Custom field schema varies per account and requires manual inventory
Document and attachment exports are not covered by standard report exports
Pair-specific challenges
Migration approach
Discovery and module audit
We audit the source SeamlessHR account across all active modules (HRIS, Payroll, Performance, Recruitment) to determine what data exists and in what volume. We extract the employee count (active and exited separately), custom field schemas for Employees and Requisitions, department and hierarchy structure, leave balance totals by type, and payroll run history summaries. We also catalog approval workflow configurations and recruitment workflow stages for the handoff documentation. The output is a written migration scope covering record counts, module dependencies, and a BambooHR edition recommendation (Core, Pro with ATS, or Elite) based on the customer's feature requirements.
Custom field schema extraction and mapping
We use the SeamlessHR API to extract the full custom field schema for Employee and Requisition objects before any data export. This includes field names, types, and any picklist values. We then create matching custom fields in BambooHR via the Employee Fields section, mapping SeamlessHR field types to their BambooHR equivalents. Fields that cannot be matched are flagged in the schema mapping document for the customer to review. This step must complete before data export begins because BambooHR will skip unmapped custom fields during import.
Dual employee export sequencing
We request both the active employee export and the exited employee export from SeamlessHR, running them in sequence and cross-referencing by employee ID to detect any records that appear in one export but not the other. Exited employees are imported into BambooHR as Employee records with the appropriate termination date and employment status. Any payroll data attached to exited profiles is extracted separately and converted to a compensation summary document rather than inserted as native payroll records.
Org structure and leave balance migration
We import the SeamlessHR department hierarchy into BambooHR Departments, preserving the parent-child relationships. Once the department tree is in place, we import employee records with their resolved department assignments. Leave balances are mapped by type to BambooHR Time Off types, and accrual balances are set as of the migration date. Pending leave requests are documented and flagged for the customer to resolve manually before cutover to avoid introducing inconsistencies.
Document extraction and attachment migration
Employee documents such as contracts, ID copies, and other attachments stored in SeamlessHR are extracted as binary blobs or metadata records. We map these to BambooHR's document management structure by linking each file to the corresponding Employee record. File naming conventions are preserved or renamed to the BambooHR standard during import. Documents that cannot be matched to an employee are held in a separate document queue for manual assignment.
Cutover, validation, and workflow handoff
We freeze writes in SeamlessHR during the cutover window, run a final delta migration of any records modified during the migration phase, then enable BambooHR as the system of record. We deliver the approval workflow inventory, custom field mapping table, and compensation summary document to the customer's BambooHR admin. We support a one-week hypercare window for reconciliation issues. We do not rebuild SeamlessHR approval workflows as BambooHR Workflows inside the migration scope; that is a separate configuration task or a BambooHR partner engagement.
Platform deep dives
SeamlessHR
Source
Strengths
Weaknesses
BambooHR
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 SeamlessHR and BambooHR.
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
SeamlessHR: Not publicly documented.
Data volume sensitivity
SeamlessHR 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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