This article lists the data types that ProBackup backs up for Basecamp and any known limitations.
What we back up
Projects
Teams
Lists
To-dos
Messages
Uploads (files)
Documents
Table cards
Events
Automatic check-ins
Comments
People
What we don't back up
Campfire
Pings
Templates
Chatbots
Client approvals, correspondences, and replies
These data types are not available through Basecamp's API. We will add them to the backup scope as soon as they become available.