Release Notes

May 2026

We have discontinued the archive_pattern and pattern parameters in the Fivetran REST API for the following connectors:

• Amazon S3
• Azure Blob Storage
• Box
• Dropbox
• Email
• FTP
• Google Cloud Storage
• Google Drive
• SharePoint
• SFTP
• S3-Compatible Storage

We will continue supporting these parameters for both new and existing connections until August 31, 2026. After August 31, 2026, we will stop supporting these parameters for all connections and replace them with the files.archive_pattern and files.pattern parameters respectively.

April 2026

We now allow you to update the primary key column after the initial sync when using the Upsert file using custom primary key option.

We have added a new toggle, Allow inconsistent row lengths, to the connection setup forms to support syncing rows in CSV files with inconsistent lengths for the following connectors:

• Amazon S3
• Azure Blob Storage
• Box
• Dropbox
• Email
• FTP
• Google Cloud Storage
• Google Drive
• SharePoint
• SFTP
• S3-Compatible Storage

This feature is available only to all new connections created after 13 April, 2026. We are gradually rolling out this feature to all existing connections. For more information, see our documentation.

February 2026

S3-compatible Storage is a storage system that supports the standard Amazon S3 REST API. Fivetran supports syncing files from your S3-Compatible Storage bucket to your destination. Read our S3-Compatible Storage connector documentation.