Where are attachments and .html files from Classic Knowledge moved when migrating to Salesforce Knowledge?

• A. Attachments remain in Classic Knowledge
• B. HTML files are moved to the Files Object
• C. Attachments and .html files in Classic Knowledge are moved to the Files Object
• D. They are not migrated

Answer: (C)

When migrating from Classic Knowledge to Salesforce Knowledge, all binary content used in articles—attachments and HTML files—are moved into the Salesforce Files object. This centralizes how files are stored and managed, aligning with Lightning Knowledge’s file handling, which uses ContentDocument/ContentVersion rather than the old Attachment structure. As a result, both attachments and HTML files are migrated so they remain attached to their articles in the new system, rather than staying behind in Classic Knowledge or being left unmigrated.