Migrate from Asana to Trello

Asana Teams map to Trello Workspaces. Team membership (member list per team) migrates as Workspace member assignments in Trello. If the Asana workspace has multiple teams, each becomes a separate Trello Workspace at the destination. We resolve the workspace admin from the Asana team owner field and assign that user as the Trello Workspace admin.

Asana Projects map directly to Trello Boards. Project name, description, color, default view setting, and archived status all transfer. Board visibility (public or private) maps from the Asana project's member visibility. Archived Asana projects become archived Trello Boards. Projects that contain multiple task types are flattened into the single-board structure since Trello does not support sub-projects natively.

Asana Sections map 1:1 to Trello Lists within a Board. Section task ordering is preserved as List card ordering. Sections with only formatting (no tasks) generate empty Lists. If an Asana project has no sections, we create a single default List (e.g., 'Tasks') and place all cards in it, noting this for customer confirmation before apply.

Asana Tasks map to Trello Cards. Standard fields transfer: title (Card name), description (Card description, sanitized from Asana's HTML to plain text or markdown), due date (Card due date), start date (not natively supported in Trello; we set Card start only if the customer has a power-up that consumes it, otherwise we preserve it in Card description). Completion status sets Card archived (completed) or active.

Asana Subtasks map to Trello Checklist items on the parent Card. Subtask name, completion status, due date, and assignee transfer to the checklist item. Deeply nested subtasks (subtask of a subtask) are flattened to a single level of checklist items since Trello does not support nested checklists natively. Checklist item assignees require the Card View power-up in Trello to display; we note this as a post-migration power-up requirement.

Asana Custom Fields of type Enum, Text, Number, and Date transfer to Trello Labels where the field has a discrete set of values. Enum color-coding migrates as Label color. Asana Formula and Rollup fields have no Trello equivalent; we document them in the migration manifest as custom-field items requiring power-up recreation (Custom Fields power-up) or manual entry post-migration. Custom field names are preserved as Label names or custom field names on the destination power-up.

Asana task dependencies (predecessor/successor relationships) have no native Trello equivalent. Trello does not expose a dependency API or object. We export the full dependency graph (task GID pairs and dependency type) in the migration manifest and document it as a rebuild item for Trello Butler automation or a third-party power-up like Hardly Works or Dependent Tasks. Dependencies that form a critical path in Asana are flagged with priority in the manifest.

Asana file attachments migrate as Trello Card attachments. We download each file from Asana and upload it to the corresponding Trello Card via the Trello API. Attachments linked to external tools (Google Drive, Dropbox, Box) are resolved as URL links on the Card because Trello cannot fetch content from those cloud storage tools directly. Files over 100MB are flagged in the manifest for manual re-upload because the Trello API rejects files exceeding that limit. Attachment metadata (created by, created at, modified by, modified at) is preserved in Card comments or a manifest row.

Asana Comments (stored as Stories linked to tasks) migrate as Trello Card comments. Author name and created_at timestamp transfer. Asana HTML-formatted comments are sanitized to plain text before posting to Trello. Comments on subtasks become comments on the parent Card if the subtask was converted to a checklist item, preserving the conversation thread context.

Asana Tags (flat workspace-level labels) map to Trello Labels on Cards. Tag name and color migrate. Tags applied across multiple tasks in multiple projects generate individual Label assignments per Card. Trello has no workspace-level tag library separate from per-board Labels; we note this as a structural difference for the customer to consider during board setup.

Asana Portfolios aggregate multiple projects for executive dashboards and are available on Starter and above. Trello has no native portfolio concept. We export portfolio metadata (name, owner, contained project GIDs) to the migration manifest and flag it as a cross-board grouping task. Customers typically recreate portfolio visibility by organizing Boards under shared Workspaces or using a power-up like Board Manager or Sheet by Sheet.

Asana Goals (OKRs) link to Projects, Portfolios, or standalone objectives and are available on Advanced tier. Trello has no OKR or goal-tracking native feature. We export Goal title, timeframe, owner, and progress metrics to the migration manifest. Customers rebuild Goals in Trello using Labels for status, due dates for timeframes, and dedicated Boards for objective grouping, or by adopting a third-party OKR tool like Perdoo or Betterworks as a parallel system.