Attachments Not Fully Imported
When performing the upgrade to VaultWiki 4, attachments seem to fail to convert to the new format. Only vw_attachment contains any data, and a number of the rows don't have page IDs.
Since it looks like a previous import in March was okay, this may be a result of the changes to the Fetch controller, since the key for attachments would now be their page ID instead of their attachment ID. In order to fetch by attachment ID, we need to replace the Fetch instances with explicit queries.