This article lists the data types that ProBackup backs up for Trello and any known limitations.
What we back up
Organisation level:
Teams and users
Workspaces
Boards
Board level:
Lists
Cards
Custom fields
Attachments
Comments
Checklists
Labels
What we don't back up
Automations
Power-Ups
Views
These data types are not available through Trello's API. We will add them to the backup scope as soon as they become available.