Project Management migration
Field-level mapping, validation, and rollback between Nozbe and Trello. We move data and schema; workflows are rebuilt natively in Trello.
Nozbe
Source
Trello
Destination
Compatibility
7 of 12
objects map 1:1 between Nozbe and Trello.
Complexity
BStandard
Timeline
1-3 weeks
Overview
Nozbe and Trello take opposite structural approaches to task organisation. Nozbe uses a Projects→Tasks→Comments hierarchy with GTD Categories and Priorities as task attributes; Trello uses Boards→Lists→Cards with Labels and due dates. We resolve the structural mismatch by mapping each Nozbe Project to a Trello Board, each List inside the Board representing a task status, and each Nozbe Task to a Card with the task description, comments, and attachments transferred. GTD Categories (Nozbe's @context labels) map to Trello Labels with a customer-approved colour scheme. Recurring tasks require a decision: we expand them into individual Cards with sequential due dates, or we store the recurrence rule as a Card comment for manual rebuild using Trello's Butler automation. We do not migrate Inbox items, Custom Fields, Time Entries, or any automation logic.
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 Nozbe 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.
Nozbe
Project
Trello
Board
1:1Each Nozbe Project maps to a Trello Board. We preserve the Project name as the Board title, the project description as the Board description, and the visibility setting (team-wide vs. member-limited) as the Board's permission level (Private vs. Workspace). If the customer uses Nozbe Business Spaces, we create a separate Trello Workspace per Business Space and nest Boards inside. Board creation runs before any List or Card creation because Lists require a Board ID reference.
Nozbe
Task
Trello
Card
1:1Nozbe Tasks map to Trello Cards within a Board. The task name becomes the Card title, the task description becomes the Card description (stored as plain text or Markdown), and the Done/undone state becomes the Card's List position or a Label flag. Due dates migrate to Trello due dates. Assignees migrate as Card members. We set the destination List based on the task's Done status: completed tasks go to a List named Done or Archive; open tasks go to a configurable default List (typically To Do or In Progress).
Nozbe
Comment
Trello
Card Comment
1:1Nozbe Comments on Tasks migrate as Trello Card Comments. We preserve author, timestamp, and @mention content. If the destination Trello workspace uses the Free plan (which limits some Power-Up features), comments remain as native Card Comments which are visible in the Card's Activity section. Chronological ordering is preserved by setting the comment timestamp at insert time via the Trello REST API.
Nozbe
Category
Trello
Label
lossyNozbe Categories (GTD @context labels like @calls, @home, @office) map to Trello Labels on each Card. Since Trello Labels are Board-scoped, we create a standard set of Labels per Board that mirrors the Nozbe Category list. We work with the customer during scoping to assign Label colours that match their existing Nozbe Category colour coding. If Nozbe Categories are not present in the JSON export (which is a known export limitation), we scrape the workspace Category list from the Nozbe web interface during scoping and recreate it as Labels.
Nozbe
Tag
Trello
Label
lossyNozbe Tags are a flat workspace-level label list distinct from Categories. We merge Tags and Categories into a single Label set per Trello Board during migration, deduplicating any overlap. Tags stored on tasks with no matching Label are created as new Labels. If the tag list is unavailable from the export or web interface, we extract unique tag strings from task data and generate Labels from those.
Nozbe
Priority
Trello
Label (colour-coded)
lossyNozbe Tasks carry a Priority flag (1-3 or custom). Trello has no native priority field, so we convert Priority to a Label. We agree on a colour scheme during scoping: Priority 1 (Critical) becomes a red Label, Priority 2 (High) becomes an orange Label, Priority 3 (Normal) is unlabelled or a green Label. The customer approves the mapping before migration runs.
Nozbe
Recurrence
Trello
Individual Cards or Card Comment
1:manyNozbe stores recurrence as a rule on a Task. Trello does not have a native recurrence model. We offer two migration paths: for simple recurrence patterns (daily, weekly, monthly), we expand the recurrence into individual Cards with sequential due dates, placing each instance on the correct List based on its completion status at migration time; for complex patterns (biweekly for 3+ years, custom skip patterns), we store the recurrence rule as a Card comment field (Recurrence: RRULE or human-readable description) and recommend rebuilding via Trello Butler post-migration. We flag the task count impact during scoping so the customer chooses before migration begins.
Nozbe
Attachment
Trello
Card Attachment
1:1Nozbe file attachments on Tasks migrate as Trello Card Attachments. We extract attachment URLs from the Nozbe JSON export, download the files to a staging environment, and re-upload to Trello via the Card attachments endpoint. Attachment author, filename, and MIME type are preserved. If files are hosted inside Nozbe without external URL access, we flag the limitation and recommend the customer export files manually from Nozbe before migration, providing a file manifest as a migration deliverable.
Nozbe
Team Member
Trello
Workspace Member
1:1Nozbe Team Members (users in a workspace) map to Trello Workspace members. We resolve by email address. Members without a matching Trello account go to a reconciliation queue for the customer's admin to provision before Card import resumes. Member roles (admin vs. member) in Nozbe translate to Trello Workspace admin vs. normal member if the destination workspace supports role management on its plan.
Nozbe
Inbox Item
Trello
Card (designated Inbox Board)
1:manyNozbe Inbox items are GTD capture entries without a Project assignment. Trello has no Inbox concept. We migrate Inbox items as Cards on a dedicated Trello Board named Inbox or Unsorted, with each Card holding the original capture text, timestamp, and source attribution. The customer's admin reviews and distributes Cards to the correct Project Boards post-migration. This is a design choice made during scoping; Inbox items can alternatively be discarded if the customer prefers a clean-start approach.
Nozbe
Due Date
Trello
Card due date
1:1Nozbe Task due dates migrate directly to Trello Card due dates. Time-of-day on due dates transfers where supported by the Trello API. Overdue dates are preserved as-is. We set the due date remider offset to the customer's preference (typically 24 hours) during migration. Nozbe reminders do not migrate because Trello does not support per-Card reminder scheduling outside of Butler automation.
Nozbe
Business Space
Trello
Workspace
1:1Nozbe Business Spaces (enterprise organisational units in new Nozbe) map to Trello Workspaces. Each Business Space becomes a Trello Workspace, with all contained Projects migrated as Boards inside that Workspace. This mapping applies only for customers on Nozbe Enterprise tier; Nozbe Premium users with a single workspace map to a single Trello Workspace.
| Nozbe | Trello | Compatibility | |
|---|---|---|---|
| Project | Board1:1 | Fully supported | |
| Task | Card1:1 | Fully supported | |
| Comment | Card Comment1:1 | Fully supported | |
| Category | Labellossy | Fully supported | |
| Tag | Labellossy | Fully supported | |
| Priority | Label (colour-coded)lossy | Fully supported | |
| Recurrence | Individual Cards or Card Comment1:many | Fully supported | |
| Attachment | Card Attachment1:1 | Fully supported | |
| Team Member | Workspace Member1:1 | Fully supported | |
| Inbox Item | Card (designated Inbox Board)1:many | Fully supported | |
| Due Date | Card due date1:1 | Fully supported | |
| Business Space | Workspace1:1 | Mapping required |
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.
Nozbe gotchas
No public API on new Nozbe forces file-based migration
Nozbe Classic and new Nozbe are separate products with no bidirectional sync
Tags and Categories require manual reconciliation post-migration
Recurring tasks may generate duplicate entries in the destination
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
Export preparation and scoping
The customer initiates a Nozbe Classic JSON export from their Nozbe Classic settings (or runs the Classic migrator first if they are on new Nozbe without a Classic account). We receive the exported zip file and decompress it for JSON parsing. During scoping, we also request temporary read access to the Nozbe web interface to scrape the tag and category lists. We audit the JSON for record counts across Projects, Tasks, Comments, Attachments, Team Members, and recurring tasks, then produce a written migration scope that covers object mapping, label decisions, recurrence strategy, and attachment handling. The customer signs off before migration begins.
Workspace and Board provisioning in Trello
We create Trello Workspaces and Boards according to the object mapping. If the customer uses Nozbe Business Spaces, we create a Workspace per Business Space. Inside each Workspace, we create Boards mirroring Nozbe Projects. Inside each Board, we create Lists representing task status columns (default: To Do, In Progress, Done). We create Label sets per Board using the agreed Category and Tag mapping. All provisioning runs via the Trello REST API using the customer's Power-Up admin token, with Board visibility set to Private or Workspace depending on the original Nozbe project visibility.
Data normalisation and transform
We normalise the Nozbe JSON export into a relational staging structure: Projects, Tasks, Comments, Attachments, and Members as separate normalised tables. We apply the object mapping transforms: Priority to coloured Labels, Category and Tag to Labels, Done status to List position, recurrence to either expanded Cards or comment fields per the customer's scoping choice. For the Lead-Contact-style split (not applicable here but noted for context), we would resolve it at this stage. We run a data quality check against the staging data and surface any orphaned records (tasks with no parent project, comments on deleted tasks) for the customer to resolve before import.
Card creation with rate-limit handling
We insert Cards into Trello in dependency order: Board provisioning first, then Cards per List. Each Card insert sets the title, description, due date, assignees (members), and Labels. We use exponential backoff with jitter on 429 rate-limit responses and batch Cards in groups of 10 to stay within the 100 req/10s per-token limit. For attachments, we download files from the Nozbe export to staging and upload them to each Card via the Trello attachments endpoint. Comment threads insert after Card creation, preserving chronological order. Each phase emits a row-count reconciliation report showing records inserted versus expected.
Sandbox review and cutover planning
We share the migration output with the customer's project lead for a 48-hour review window. The lead spot-checks 25-50 Cards for accuracy in label assignment, due date format, comment chronology, and attachment presence. We correct any mapping errors and re-run the affected phases. Once sign-off is received, we agree on a cutover window. On cutover day, we freeze active work in Nozbe, run a final delta migration of any tasks modified since the initial export, and mark the Trello workspace as live. We do not deactivate the Nozbe account during cutover.
Post-migration handoff and automation inventory
We deliver a migration summary document covering record counts migrated, any records skipped with rationale, the label mapping table, and a list of recurring tasks migrated as Card comments with their original recurrence rules. We do not rebuild Trello Butler automations or Power-Up configurations inside the migration scope. We do not migrate Nozbe Workflows or Inbox routing logic. For Butler automation rebuilds, we provide a written reference guide mapping common recurrence and notification patterns to Butler rule syntax, which the customer's admin implements independently or with a Trello-focused partner.
Platform deep dives
Nozbe
Source
Strengths
Weaknesses
Trello
Destination
Strengths
Weaknesses
Complexity grading
Standard Project Management migration. 1 of 8 objects need a manual workaround.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Nozbe and Trello.
Object compatibility
1 of 8 objects need a manual workaround.
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
Nozbe: Not publicly documented.
Data volume sensitivity
Nozbe 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.
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FAQ
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