CRM migration
Field-level mapping, validation, and rollback between TeamWave and Mailchimp. We move data and schema; workflows are rebuilt natively in Mailchimp.
TeamWave
Source
Mailchimp
Destination
Compatibility
4 of 9
objects map 1:1 between TeamWave and Mailchimp.
Complexity
BStandard
Timeline
1-2 weeks
Overview
TeamWave and Mailchimp serve different primary functions: TeamWave is an integrated CRM and project management suite whose Contacts and Companies map to Mailchimp Audience Members, while Deals, Projects, Tasks, and HR records have no Mailchimp equivalent and are excluded from migration scope. This is a contact-centric migration from a general-purpose CRM to an email marketing platform, which means the destination schema is intentionally narrower. We extract TeamWave contact data via CSV from the web interface, cross-reference the company_id foreign key to populate Mailchimp merge fields (company name, lifecycle stage, deal value), and load through Mailchimp's bulk import API. Attachment metadata is preserved in a re-upload manifest since binary files cannot be exported from TeamWave. Workflows and automations are not migrated because Mailchimp's automation model (Customer Journey Builder) is event-triggered and must be rebuilt post-migration.
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 TeamWave object lands in Mailchimp, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
TeamWave
Contact
Mailchimp
Audience Member
1:1TeamWave Contacts map directly to Mailchimp Audience Members. The email address serves as the unique identifier. We extract name, email, phone, address, and lifecycle stage from the TeamWave contact export and map these to Mailchimp's EMAIL, FNAME, LNAME, PHONE, and ADDRESS merge fields plus a LIFECYCLESTAGE custom merge field. Status (active, unsubscribed, bounced) is resolved from TeamWave's contact state and written to Mailchimp's SUBSCRIPTION_STATUS field during import.
TeamWave
Company
Mailchimp
Merge Field (COMPANY)
lossyMailchimp has no native Company or Account object. TeamWave Company records with the company_id foreign key on Contact are resolved during import and written to a COMPANY merge field on each member record. If the customer maintains multiple distinct company segments, we create separate Mailchimp Audiences per segment rather than using tags, since Mailchimp's per-audience analytics provide better segmentation clarity.
TeamWave
Deal
Mailchimp
Tag (deal stage)
lossyMailchimp has no deal or pipeline object. TeamWave Deals are not migrated as structured records. However, if the customer has fewer than 50 distinct deal records and wants to preserve deal stage context for marketing segmentation, we map deal stage labels as Mailchimp Tags on the linked contact records. This is an optional configuration discussed during scoping; by default, deals are excluded.
TeamWave
Contact Custom Fields
Mailchimp
Merge Fields
lossyTeamWave custom fields on Contacts migrate to Mailchimp merge fields. Mailchimp enforces a 255-character limit on text merge fields. Any TeamWave custom field exceeding this length is flagged during scoping, and we truncate with a manifest entry showing original value and truncation point. Long-text area fields from TeamWave cannot be fully preserved and are noted in the field mapping document.
TeamWave
Contact Lifecycle Stage
Mailchimp
Tag or Segment
lossyTeamWave lifecycle stage (Lead, Customer, Evangelist, etc.) is a contact property without a native Mailchimp equivalent. We migrate it as a LIFECYCLESTAGE merge field for direct value access and optionally as a Mailchimp Tag for segmentation. During scoping, the customer chooses between merge field (one field, accessible in email content) or tag (filterable in segmentation, visible in audience analytics).
TeamWave
Owner
Mailchimp
Tag or Internal Note
lossyTeamWave Owners (sales reps) are referenced on Contacts and Deals. Mailchimp does not have an owner assignment model. We map owners to Tags on the contact record (e.g., Owner: Sarah Chen) for visibility in Mailchimp's audience view, or we document the assignment in the migration handoff notes for the customer's admin to action in a CRM-native system if needed.
TeamWave
Projects
Mailchimp
None (excluded)
1:1TeamWave Projects have no Mailchimp equivalent. We export the project list as a CSV inventory and include it in the handoff documentation. Customers who need project context alongside contacts should maintain a separate project management tool; we do not map Projects to Mailchimp structures.
TeamWave
Tasks
Mailchimp
None (excluded)
1:1TeamWave Tasks and Calendar Events have no Mailchimp equivalent. Task assignments, due dates, and status fields cannot be represented in Mailchimp's contact model. We export a task inventory CSV as part of the handoff documentation for the customer's admin to migrate to a task management system separately.
TeamWave
Attachments
Mailchimp
Re-upload manifest
1:1TeamWave file attachments linked to Contacts cannot be exported in bulk. We snapshot attachment metadata (filename, file size, linked contact email, TeamWave record ID) and deliver a re-upload manifest. The customer's admin re-uploads attachments to the linked Mailchimp contacts manually or via Mailchimp's file hosting for content blocks post-migration.
| TeamWave | Mailchimp | Compatibility | |
|---|---|---|---|
| Contact | Audience Member1:1 | Fully supported | |
| Company | Merge Field (COMPANY)lossy | Fully supported | |
| Deal | Tag (deal stage)lossy | Fully supported | |
| Contact Custom Fields | Merge Fieldslossy | Fully supported | |
| Contact Lifecycle Stage | Tag or Segmentlossy | Fully supported | |
| Owner | Tag or Internal Notelossy | Fully supported | |
| Projects | None (excluded)1:1 | Mapping required | |
| Tasks | None (excluded)1:1 | Mapping required | |
| Attachments | Re-upload manifest1:1 | Not 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.
TeamWave gotchas
No publicly documented API endpoint surface
Attachment export requires manual re-upload
Free tier enforces feature caps that affect migration scope
Mailchimp gotchas
Contact count includes unsubscribed and non-subscribed records
Automation workflows cannot be exported
Account suspensions trigger silently during migration
Template HTML is Mailchimp-specific and may not render in other platforms
E-commerce data requires active store connection
Pair-specific challenges
Migration approach
CSV extraction from TeamWave web interface
We extract contact and company data from TeamWave via repeated CSV exports from the web interface, working around the per-batch record limit by running segmented exports (by lifecycle stage, by owner, by company). We cross-reference the company_id foreign key to reconstruct the Contact-Company relationship. Any exported dataset exceeding the UI batch limit triggers a scripted export-and-merge pipeline that we run on the customer's behalf. The extraction output is a reconciled contact CSV with duplicate flags and a company CSV with lookup IDs.
Data audit and deduplication
We run a data quality audit on the extracted CSV: duplicate detection on email address, missing email validation, invalid email format cleanup, and merge field length check against Mailchimp's 255-character limit. We build a suppression list from any TeamWave contacts with bounced, unsubscribed, or invalid states. We produce a pre-migration data quality report and wait for customer sign-off before importing into Mailchimp.
Merge field configuration in Mailchimp
We create all required merge fields in the destination Mailchimp Audience before importing any records. This includes standard fields (FNAME, LNAME, PHONE, ADDRESS) and any custom LIFECYCLESTAGE, COMPANY, or OWNER fields the customer has requested. We configure field types to match TeamWave data types (text for short fields, date for date fields) and set the 255-character validation on text fields. Merge fields are created in the Mailchimp audience settings before any member import begins.
Bulk import via Mailchimp API
We import contacts into Mailchimp using the Mailchimp bulk import API endpoint with batch chunking and exponential backoff on rate limit responses. We import suppressed contacts first (bounced, unsubscribed) to ensure they are blocked before active sends begin. Active contacts follow in subsequent batches with the company_id foreign key resolved to the COMPANY merge field and lifecycle stage resolved to the LIFECYCLESTAGE tag or merge field. Each batch emits a row-count reconciliation report.
Audience segmentation and tag creation
We apply tags based on migration mapping decisions made during scoping: lifecycle stage tags, owner tags, deal stage tags (if applicable), and any segment-specific tags the customer has requested. Tags are applied in a follow-on batch after all member records are loaded. If multiple audiences were scoped (per company segment), we create each audience and map contacts into the correct audience using audience segment rules or direct audience assignment.
Attachment manifest and automation rebuild handoff
We deliver the attachment re-upload manifest with filenames, linked contact emails, and TeamWave record IDs so the customer's admin can manually re-upload files to Mailchimp content blocks or linked contact records. We deliver a written automation inventory of any TeamWave workflows that have email-send triggers, mapped to Mailchimp Customer Journey Builder equivalents. We do not rebuild automations in Mailchimp; the inventory document guides the customer's admin or a Mailchimp partner through rebuild.
Platform deep dives
TeamWave
Source
Strengths
Weaknesses
Mailchimp
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 1 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across TeamWave and Mailchimp.
Object compatibility
1 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
TeamWave: Not publicly documented.
Data volume sensitivity
TeamWave 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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