With lightning knowledge migration, none of the article file attachments were migrated. How can attachments be migrated?

• A. Use the files-related list on each article to add files to your articles
• B. Post the files to the chatter feed on each article
• C. Upload the files like documents, then relate them to the migrated articles
• D. Use the lightning knowledge migration tool and choose "include files"

Answer: (A)

In Lightning Knowledge, attachments are stored as Files (ContentDocument/ContentVersion), not as traditional attachments. When articles are migrated, the files themselves aren’t automatically carried over in the article record. To bring the attachments over, re-link the relevant files to each article using the Files related list.

This approach uses the standard Files mechanism, so the attachments appear on the article with the correct visibility and version history. You can do this per article by adding the appropriate files, or, for many articles, you can automate by creating the necessary links (ContentDocumentLink) to connect each article to its corresponding file records.

Other options don’t attach files to the article in Lightning Knowledge in the same reliable way: posting to a Chatter feed doesn’t attach the file to the article, uploading as Documents and then relating them isn’t the typical workflow for knowledge articles, and relying on a migration tool option to “include files” isn’t a guaranteed method for migrating article attachments.