This article lists the data types that ProBackup backs up for Asana and any known limitations.
What we back up
Account level:
Workspaces
Teams
Projects
Portfolios
Project level:
Tasks and subtasks
Dependencies
Custom fields
Tags
Comments
Attachments
Milestones
Goals
Approvals
What we don't back up
Views
Forms
Conversations
Rules
Timeline positions
Comments on subtasks
Files attached via a third-party platform (e.g. Dropbox, Google Drive, Box, OneDrive, or SharePoint)
These data types are not available through Asana's API. We will add them to the backup scope as soon as they become available.