Project Management migration
Field-level mapping, validation, and rollback between Ganttic and Trello. We move data and schema; workflows are rebuilt natively in Trello.
Ganttic
Source
Trello
Destination
Compatibility
6 of 12
objects map 1:1 between Ganttic and Trello.
Complexity
BStandard
Timeline
3-5 weeks
Overview
Moving from Ganttic to Trello is a structural migration that reconciles a resource-centric Gantt model against a Kanban-style card and board paradigm. Ganttic's core entity is the Resource (person, room, vehicle, or equipment) scheduled across Projects and Tasks on a visual timeline; Trello has no native Resource object and represents work as Cards moving through Lists within Boards. We map Ganttic Resources to Trello Board Members and Labels, Projects to either top-level Boards or parent Lists, Tasks to Cards, and Milestones (implemented as date Data Fields in Ganttic) to Card due dates or checklist summaries. Ganttic's nine Data Field types (List, Multi-Select, Check, Text, Number, Date, User, Link, Auto Increment) require Custom Fields in Trello, which are available only on Premium and Enterprise tiers. We flag this before migration begins so the customer confirms their Trello tier or adjusts scope. We do not migrate Ganttic Custom Views as code; we deliver a written inventory of view configurations for the customer's admin to recreate as Board settings. Reports export as CSV during discovery and are documented for manual rebuild in Trello or a connected BI tool.
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 Ganttic 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.
Ganttic
Resources
Trello
Board Members
1:manyGanttic Resources (people, rooms, vehicles, equipment) map to Trello Board Members for task assignment. A single Ganttic Resource assigned to multiple Projects on different dates resolves to one Trello Member record with Cards on multiple Boards. Resources with Data Field values (department, role, skillset) map to Custom Fields on the Member profile if Trello Premium is confirmed, or to Card Labels if the destination is a lower tier. Archived Resources in Ganttic are excluded from migration by default, reducing the customer's post-migration Ganttic plan cost.
Ganttic
Resource Grouping
Trello
Labels
1:1Ganttic Resource Grouping (hierarchical groupings by Data Field values like department, location, or skillset) maps to Trello Labels. Each distinct grouping value becomes a Label with a color code. Nested groupings flatten into a single Label hierarchy per Board since Trello Labels do not support parent-child relationships. We preserve the grouping field name in the Label description for audit.
Ganttic
Projects
Trello
Board
1:1Ganttic Projects map to Trello Boards. Project duration (start date, end date) maps to the Board description field, and project-level Data Fields (List, Check, Text, Number, Date) map to Custom Fields on a template Card or to Board description metadata. We create one Board per Ganttic Project, preserving the project name and any archived status as a Board label.
Ganttic
Tasks
Trello
Card
1:1Ganttic Tasks map to Trello Cards. Task start and end dates map to Card due dates; assignees (Resource assignments on Tasks) map to Card Members via the Resource-to-Member lookup. Task Data Fields migrate as Custom Fields on each Card. Tasks without explicit due dates become Cards with no due date, placed in the first List of the destination Board.
Ganttic
Task Milestones (date Data Fields)
Trello
Card due date or checklist summary
lossyGanttic Milestones are date Data Fields on Projects rather than a distinct object. We extract every Project Data Field of type Date and evaluate whether it represents a milestone (named with keywords like milestone, deadline, go-live, kickoff, launch). Named milestones map to a summary Card with a due date and a checklist of dependent child Tasks. Anonymous date fields map to the parent Card's due date if the Task itself carries that date. We document the full Milestone mapping in the discovery output so the customer confirms the intended conversion strategy.
Ganttic
Project Data Fields
Trello
Custom Fields
lossyGanttic's nine Data Field types on Projects (List, Multi-Select, Check, Text, Number, Date, User, Link, Auto Increment) map to Trello Custom Fields. Custom Fields are available on Trello Premium and Enterprise plans only; Standard and Free tiers require us to map List and Multi-Select to Labels and Check to a Label color, Text to Card description, Number and Date to due date or checklist, and User to Card Members. We confirm the destination Trello tier during scoping and generate a pre-migration seed script for any picklist values in List or Multi-Select Data Fields.
Ganttic
Resource Data Fields
Trello
Custom Fields or Labels
lossyResource Data Fields (department, skillset, location, role, hourly rate) map to Trello Custom Fields on Board Members (Premium/Enterprise) or to Card Labels and checklist items (Standard/Free). Number-type fields like hourly rate map to a Custom Field of type Number or to a Card checklist item. We flag any Resource Data Field that has mandatory validation in Ganttic so the customer confirms whether that constraint applies in Trello.
Ganttic
Task Data Fields
Trello
Custom Fields
lossyTask Data Fields (the same nine-type system as Projects and Resources) map to Trello Custom Fields on Cards. Multi-Select fields with multiple values per Card require Trello Custom Fields with the Multiple option enabled (Premium+). If the destination tier is Standard or Free, Multi-Select values collapse into a single comma-separated Text Custom Field. We generate the pre-migration seed script for all picklist values in List and Multi-Select Data Fields during discovery.
Ganttic
Custom Views
Trello
Board configuration documentation
1:1Ganttic Custom Views define per-view time periods, grouping criteria, and filter configurations. Trello does not have a native view-configuration object, so we export all Custom View settings as part of discovery and deliver a written Board configuration document that maps each Ganttic View to a recommended Trello Board structure (List order, Label scheme, filter settings, and Power-Up recommendation). The customer's admin recreates views manually from this document.
Ganttic
Reports
Trello
CSV export and reporting inventory
1:1Ganttic Reports export as CSV or PDF and may contain calculated metrics (resource utilization percentages, project completion rates, task duration summaries). We extract CSV exports during discovery to capture calculated values. Trello has no native reporting engine beyond basic Board statistics; we deliver a written reporting inventory documenting each Ganttic Report's structure and recommended Trello or third-party replacement (Atlassian Analytics, Google Sheets, or a connected BI tool).
Ganttic
Resource allocation and capacity
Trello
Card Members and due dates
lossyGanttic assigns Resources to Tasks with optional allocation percentage (e.g., Alice at 50% on Task A, 50% on Task B). Trello Cards support Member assignment but not allocation percentages. We resolve each Resource allocation by creating a Card for each distinct assignment and documenting the original allocation percentage in a Card label or Custom Field. For utilization reporting, we export a capacity summary CSV during discovery for the customer to build utilization tracking in a connected spreadsheet.
Ganttic
Project shift operations (pre-migration state)
Trello
Card due date audit snapshot
1:1Ganttic's shift feature moves an entire Project along with all its Tasks and Milestones on the timeline. The documentation confirms this action cannot be automatically reversed. We capture the full pre-shift state of all Projects before migration begins so the customer's Ganttic instance remains undisturbed during parallel-run validation. The pre-migration snapshot is included in the discovery export as a JSON artifact for the customer's records.
| Ganttic | Trello | Compatibility | |
|---|---|---|---|
| Resources | Board Members1:many | Fully supported | |
| Resource Grouping | Labels1:1 | Mapping required | |
| Projects | Board1:1 | Fully supported | |
| Tasks | Card1:1 | Fully supported | |
| Task Milestones (date Data Fields) | Card due date or checklist summarylossy | Fully supported | |
| Project Data Fields | Custom Fieldslossy | Mapping required | |
| Resource Data Fields | Custom Fields or Labelslossy | Mapping required | |
| Task Data Fields | Custom Fieldslossy | Mapping required | |
| Custom Views | Board configuration documentation1:1 | Mapping required | |
| Reports | CSV export and reporting inventory1:1 | Mapping required | |
| Resource allocation and capacity | Card Members and due dateslossy | Fully supported | |
| Project shift operations (pre-migration state) | Card due date audit snapshot1:1 | 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.
Ganttic gotchas
Data Field type mapping requires pre-seeded picklist values
Resource-based pricing means only active resources cost money
Project shifting cannot be automatically reversed
API rate limits are not publicly documented
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 tier confirmation
We audit the source Ganttic planner across Resources (active and archived), Projects, Tasks, Milestones (date Data Fields), Data Field definitions (all nine types with picklist values for List and Multi-Select), Resource Grouping hierarchies, Custom View configurations, and Report CSV exports. We pair this with Trello tier confirmation: Standard, Premium, or Enterprise. The destination tier determines whether Custom Fields are available natively or require workaround mapping (Labels, Card descriptions, checklists). The discovery output is a written migration scope with record counts, Data Field type inventory, and picklist value lists for pre-seeding.
Pre-migration data seeding
Before any records move, we generate and execute a seed script that pre-creates Labels (from Ganttic Resource Grouping values), Custom Fields (from Ganttic Data Field definitions with their types and picklist values), and Board Members (from Ganttic Resources). If the destination is Trello Standard or Free, we seed Labels only and map Data Fields to Card description or checklist formats. We validate the seed by creating a test Board with one Card before proceeding to bulk migration.
Resource migration with grouping and archiving
We migrate Ganttic Resources to Trello Board Members and Labels. Archived Ganttic Resources are flagged during discovery and excluded from migration by default, reducing post-migration Ganttic plan cost. Active Resources with Data Field values map to Labels or Custom Fields per the tier-confirmed strategy. We extract Resource Grouping hierarchies and flatten them to a single-level Label scheme per destination Board.
Project and task migration in dependency order
We migrate Projects to Trello Boards first, then Tasks to Cards within those Boards. Task-to-Card mapping preserves due dates (from Ganttic Task end date), Card Members (from Ganttic Resource assignments), and Custom Fields (from Task Data Fields). Milestones (Ganttic date Data Fields on Projects) generate a summary Card with a due date and a checklist of dependent child Tasks, documented in the discovery output for customer confirmation.
Custom Field and Data Field post-processing
We validate that all Ganttic Data Field values landed correctly in Trello Custom Fields, Labels, or Card descriptions. List and Multi-Select values are verified against the pre-seeded picklist. Any records that fail validation (e.g., a picklist value missing from the seed script) are flagged in a reconciliation report with the affected record ID, field name, and value. We do not silently skip records; the customer reviews the report before production cutover.
Cutover, validation, and view rebuild handoff
We freeze Ganttic 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 deliver the Custom View inventory document (for the customer's admin to recreate as Board settings), the Report inventory (for manual rebuild in Trello or a connected BI tool), and the pre-migration snapshot of all Project shift states. We support a one-week hypercare window where we resolve any record reconciliation issues. We do not rebuild Ganttic Custom Views as Trello configurations inside the migration scope; that is a separate engagement or an internal admin task.
Platform deep dives
Ganttic
Source
Strengths
Weaknesses
Trello
Destination
Strengths
Weaknesses
Complexity grading
Standard Project Management migration. 2 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 Ganttic and Trello.
Object compatibility
2 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
Ganttic: Not publicly documented.
Data volume sensitivity
Ganttic 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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