Issue Summary

After copying Confluence spaces between two Cloud sites using Copy product data (Admin Hub), a subset of migrated attachments are broken on the destination:

• Inline preview: "Ouch! We can't load the image."

• Download: fails

• Media API returns:
   
   {{{"error":
  Unknown macro: {"code"}

  }}}

• New attachments uploaded to destination after the copy work fine.

• Same attachments on the source site still work correctly.

The plan shows Succeeded in Admin Hub — no errors or warnings visible to the customer.

Steps to Reproduce

1. Two Confluence Cloud sites (source + destination).

1. Source site has spaces with pages containing inline image attachments.

1. Run Copy product data (Admin Hub) for those spaces → plan completes as Succeeded.

1. On destination, some inline images show "Ouch! We can't load the image." and download fails.

1. Inspect broken image URL → media API returns NotFoundError.

Expected Results

• After a successful Copy Product Data run, all migrated attachments should be previewable and downloadable on the destination site.

Actual Results

• Preview is unavailable. The Copy Product Data plan shows Succeeded with no errors or warnings — the customer has no indication anything went wrong until they visit the pages.

Workaround

1. Delete destination space → re-run Copy Product Data

• • Loses any post-copy changes on destination.

• • Officially documented but disruptive.

1. Manual re-upload via REST API

• • Download from source, POST to destination per attachment.

• • Not scalable beyond ~50 files.