Project Management migration
Field-level mapping, validation, and rollback between AceProject and Trello. We move data and schema; workflows are rebuilt natively in Trello.
AceProject
Source
Trello
Destination
Compatibility
7 of 12
objects map 1:1 between AceProject and Trello.
Complexity
BStandard
Timeline
3-5 weeks
Overview
Moving from AceProject to Trello is a structural migration from a project-centric to a card-centric data model. AceProject organizes work hierarchically under Projects with Tasks holding Subtasks, Assignees, Estimates, Dependencies, and Expenses. Trello uses Boards containing Lists containing Cards; Subtasks have no native object equivalent and must be represented as Checklist items on the parent Card. We pre-create Trello Boards from AceProject Projects, map task fields to Card properties (due date, members, labels), flatten subtask trees into parent-child checklist relationships, and represent time entries and expense data as custom fields via the Custom Fields Power-Up. Dependencies do not migrate natively — we document the dependency graph in a written reference so the customer's admin can rebuild it using a Trello Power-Up such as Planyway or Card Dependencies. We do not migrate AceProject Workflows or automations; these are not transferable to Trello Butler or third-party automation tools and are documented for manual 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 AceProject object lands in Trello, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
AceProject
Project
Trello
Board
1:1AceProject Projects map directly to Trello Boards. We export project name, description, status (Active/Completed/On Hold), start date, and end date via the admin Export Data tool. Project status maps to Board visibility (Active maps to Private or Team Board; Archived maps to Closed Board state). If the AceProject account has multiple Projects with overlapping names, we apply a naming prefix or suffix to prevent board name collision in Trello.
AceProject
Task
Trello
Card
1:1AceProject Tasks map to Trello Cards. Each Task becomes a Card in a designated List (default List name is derived from the Task's status field or a configurable 'To Do / In Progress / Done' list mapping). Task name becomes Card title, description maps to Card description, Assignee maps to Card members, Due Date maps to Card due date, and Priority maps to Card label color. Custom task fields (Boolean, Date, List, Numeric, Text, User) map to Trello Custom Fields Power-Up field types. AceProject's new-interface requirement for custom field visibility applies — we verify which interface version was used during export.
AceProject
Subtask
Trello
Checklist Item
1:manyAceProject Subtasks have no direct Trello equivalent and are represented as Checklist items on the parent Card. We flatten the task-subtask tree during export, generating one parent-child pair per subtask, then reconstruct them as Checklist items with the checklist name matching the parent task name. Checklist item completion state (Done/Pending) maps from Subtask status. This approach preserves the work breakdown without creating separate Card records for each subtask. Nested subtasks (sub-subtasks) are flattened to one level of Checklist item to stay within Trello's single-level checklist structure.
AceProject
Time Entry
Trello
Custom Fields (Card)
lossyTrello has no native time tracking object. We represent AceProject time entries as custom fields on the parent Card: a Number custom field for hours logged, a Date custom field for the entry date, and a Text custom field for billing rate or notes. Multiple time entries against a single task are aggregated into summary custom fields (total hours, total billing amount) since Trello cards support only one value per custom field. If the customer licenses a time tracking Power-Up (Time Tracking by Bluefeet or Corenuts), we configure that Power-Up instead of custom fields and import entries as tracked time.
AceProject
Expense
Trello
Custom Fields (Card) or separate Board
lossyAceProject expense records are tied to Projects and optionally Tasks. We map expense data to Trello custom fields on the relevant Card: a Number field for amount, a Text field for currency, a Text field for expense category, and a Date field for expense date. Expense records gated by AceProject user role (non-admin users may not see expense fields) require the export to run under an administrator account — we confirm admin access during scoping. If the customer has high-volume expense data, we may recommend a separate Expenses Board in Trello with one Card per expense, linked back to the source project Card via a label or checklist reference.
AceProject
User
Trello
Board Member
1:1AceProject Users are exported at the account level with their name, email, and custom User fields. We create Trello member accounts by email invitation and map the AceProject user to the Trello member. User custom fields migrate to Trello member profile fields if the customer's Trello Enterprise plan supports them; otherwise they are stored as a written reference for manual entry. AceProject's project membership gating applies: imported users do not automatically become Board members — we generate a Board invitation list during migration and the customer's admin sends invitations or bulk-adds members post-migration.
AceProject
User Custom Fields
Trello
Custom Fields (Card) — Member Type
1:1AceProject User-level custom fields (Boolean, Date, List, Numeric, Text, User type) are exported as key-value pairs. We map User-type custom fields to Trello Card member fields (assigning the referenced user as a Card member) and other types to Text or Number custom fields on the Card. If a User-type custom field references a user not yet invited to the Trello workspace, we flag the unresolved reference in the scoping report and hold that mapping until the user is provisioned.
AceProject
Dependency
Trello
Written dependency map + Power-Up reference
1:1AceProject task dependencies with type (Finish-to-Start, Start-to-Start, etc.) and linked Task ID do not have a native Trello equivalent. Trello has no built-in dependency or blocking relationship between cards. We export the full dependency graph from AceProject, produce a written dependency map document (card A blocks card B, card C depends on card D), and recommend a Power-Up (Planyway, Card Dependencies, or Project Management for Trello) for rebuilding the dependency logic in Trello. The migration does not install or configure the Power-Up — we deliver the reference documentation for the customer's admin to implement post-migration.
AceProject
Document
Trello
Card Attachment or External Link
1:1AceProject documents are associated with Projects and carry metadata (filename, upload date, author, file size). We export document metadata and file references. If the destination Trello workspace uses a connected cloud storage service (Google Drive, Dropbox, OneDrive/SharePoint via Power-Up), we map document references to external links on the Card. Direct file attachment migration depends on file size limits and cloud storage configuration — we flag any documents exceeding Trello's 10MB per-attachment limit and recommend a cloud link strategy instead.
AceProject
Task Comment
Trello
Card Description (appended) or External Reference
1:1AceProject task comments and document comments are exported as text with author and timestamp. Trello cards have a single description field and a Card Activity log (accessible via premium), but no native comment thread on cards without Power-Ups. We append comments as a formatted block in the Card description (commenter name, timestamp, comment text) to preserve the content. If the customer licenses a commenting Power-Up (such as GitHub-style comments or a third-party card comment tool), we note the mapping for that Power-Up configuration. Nested comment threads are flattened to maintain chronological order without thread hierarchy.
AceProject
Task Priority
Trello
Card Label
lossyAceProject task priority levels (Urgent, High, Normal, Low) map to Trello Card labels. We configure label colors in the target Board to match the AceProject priority schema: e.g., Red for Urgent, Orange for High, Yellow for Normal, Green for Low. If the AceProject account uses a custom priority label set, we align Trello label colors to the customer's existing convention during Board setup.
AceProject
Task Status
Trello
List
lossyAceProject task statuses (Not Started, In Progress, Completed, On Hold, Cancelled) map to Trello Lists within each Board. We configure Lists per Board based on the AceProject workflow states present in the source data. If AceProject uses a custom status workflow per project, we create a corresponding list configuration per Board. Tasks with status Completed are placed in the configured 'Done' or equivalent list; cancelled tasks are placed in a separate 'Cancelled' list or closed (archived) in Trello based on the customer's preference.
| AceProject | Trello | Compatibility | |
|---|---|---|---|
| Project | Board1:1 | Fully supported | |
| Task | Card1:1 | Fully supported | |
| Subtask | Checklist Item1:many | Fully supported | |
| Time Entry | Custom Fields (Card)lossy | Fully supported | |
| Expense | Custom Fields (Card) or separate Boardlossy | Fully supported | |
| User | Board Member1:1 | Fully supported | |
| User Custom Fields | Custom Fields (Card) — Member Type1:1 | Fully supported | |
| Dependency | Written dependency map + Power-Up reference1:1 | Fully supported | |
| Document | Card Attachment or External Link1:1 | Fully supported | |
| Task Comment | Card Description (appended) or External Reference1:1 | Fully supported | |
| Task Priority | Card Labellossy | Fully supported | |
| Task Status | Listlossy | 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.
AceProject gotchas
Task import does not auto-assign users to Projects
Custom fields only visible in the new interface
CSV import requires DOS-style CRLF line endings
Expense field visibility gated by user role
Trello gotchas
Billing model uses maximum seat quantity at term midpoint
Custom Field data historically stored in pluginData
API rate limits are token-gated and can block bulk migration
Guest-to-paid seat conversion triggers on multi-board membership
Automation command runs are capped per plan and overage triggers upgrade pressure
Pair-specific challenges
Migration approach
Discovery and AceProject interface audit
We audit the source AceProject account under an administrator account to bypass expense visibility restrictions. We export the full record inventory: Projects, Tasks, Subtasks, Users, Time Entries, Expenses, Documents, Dependencies, and custom fields for both Tasks and Users. We verify which AceProject interface version is active — if the classic interface is in use, we advise switching to the new interface before running the export to ensure custom field values are populated. We confirm the target Trello workspace plan tier (Free, Standard, or Premium) and identify whether the Custom Fields Power-Up is available or must be installed. The discovery output is a written scope document listing record counts per object, custom field inventory, and any pre-migration prerequisites.
Trello workspace and Board schema design
We create the Trello workspace structure based on AceProject's project inventory. Each AceProject Project becomes a Trello Board, with Lists configured per the AceProject task status workflow. We configure card labels to match AceProject priority levels, set up custom field schemas using the Custom Fields Power-Up (one field per AceProject custom field, with type mapping: AceProject Boolean → Trello Checkbox, Date → Trello Date, List → Trello Dropdown, Numeric → Trello Number, Text → Trello Text, User → Trello Member). If time entries and expenses are in scope, we configure the corresponding custom field groups. The schema is validated in a Trello sandbox workspace before production Board creation.
User provisioning and Board member setup
We extract every AceProject User referenced in the task scope, match by email to Trello workspace members, and generate a Board invitation list. Users without a matching Trello account are flagged in a reconciliation report for the customer's admin to provision. We apply the AceProject user-role mapping (Admin, Manager, Normal) to Trello Board permissions — Admin users become Board admins, Managers become normal Board members with edit rights, Normal users receive the configured access level. Project membership gating applies: users are added per Board based on the AceProject project membership data.
Task-to-Card migration with checklist reconstruction
We run the task migration in dependency order: first creating all Cards (without checklist items) so that Card IDs are available, then inserting checklist items referencing parent Card IDs. Task fields map to Card properties: due date → Card due date, assignees → Card members, priority → Card label, description → Card description. Custom task fields populate via the Custom Fields Power-Up API. Subtasks are processed as a second pass after all parent Cards exist, with each subtask becoming a checklist item on the identified parent Card. If multiple time entries exist for a single task, we aggregate hours by date into summary custom fields. Open subtask relationships (subtasks that reference tasks not yet created) are held in a dependency queue until the parent Card is created, then resolved in order.
Time entries, expenses, and document reference migration
Time entries are processed after the parent Card migration is complete. We aggregate entries by task, create custom fields on the parent Card for total hours and billing amount, and append an itemized time entry list to the Card description if granular entry detail is required. Expense records are mapped either to Card-level custom fields (amount, currency, category) or to a dedicated Expenses Board with one Card per expense, cross-referenced by project label. Document metadata is added as a card-level link (URL to the document in AceProject if the source system remains accessible) or as a cloud storage reference if the customer configures a Google Drive or SharePoint Power-Up before migration. The dependency graph is exported and delivered as a written reference document.
Cutover, validation, and Power-Up handoff
We freeze AceProject writes during cutover, run a final delta migration of any records modified during the migration window, then enable Trello as the system of record. We validate card count, checklist item count, custom field population rate, and member assignment coverage against the source inventory. We deliver the dependency graph document, the workflow rebuild reference for Trello Butler (if the customer requests automation documentation), and the custom field schema reference for the Power-Up. We do not configure Power-Up installations or Butler automation rules as part of standard scope — those are documented for the customer's admin to implement. We support a one-week post-cutover reconciliation window to address record-level discrepancies.
Platform deep dives
AceProject
Source
Strengths
Weaknesses
Trello
Destination
Strengths
Weaknesses
Complexity grading
Standard Project Management migration. 3 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 AceProject and Trello.
Object compatibility
3 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
AceProject: Not publicly documented — typical SaaS limits assumed and confirmed during scoping..
Data volume sensitivity
AceProject 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
Answers to the questions buyers ask most during AceProject to Trello migration scoping. Not seeing yours? Book a call.
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