Currently files & attachments from Confluence are not brought over to Salesforce. Pages that contains links to attachments will be retained in Salesforce, and will direct it back to Confluence.
It'll be great if
The files and attachments from Confluence are brought over into Salesforce
All links to these files and attachments will direct to the migrated files & attachments in Salesforce.
If a Confluence page contains an attachment, (From Page Tools (3 dots) > Attachments) it’ll be nice if that attachment can be migrated to Salesforce along with the content of the page.
And if that page contains a link that directs to that attachment, it should be the same experience after the page is published into Salesforce