Wiki attachments still exist in Live after deleting in Staging

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X EE, Master
• Fix Version/s: 7.0.0 DXP FP28, 7.0.X EE, 7.0.4 CE GA5, 7.1.X, Master
• Component/s: Collaboration, Collaboration > Blogs, Staging
• Labels:
  • QA-AUTOMATION
  • liferay-digital-enterprise-70-sp5
  • liferay-fixpack-de-28-7010
  • staging_testing
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Sprint: Collab 10, Collab 11
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/50812

Steps to reproduce:

1. Activate local staging for Wiki
2. In Staging, add a new Wiki page
3. Edit Wiki page and add an attachment
4. Publish to Live
5. Go to Live and assert Wiki page and attachment are present
6. Go back to Staging
7. Remove attachment from Wiki page
8. Publish to Live
9. Go to Wiki page

Expected result: Attachment is no longer present.
Actual result: Attachment is still present in live.

Reproduced on:
Tomcat 8.0.32 + MySQL 5.6
Portal master GIT ID: 12e1d4fdc3327c93274ded6d6b66835ce86a3cbe
Portal ee-7.0.x GIT ID: 0ee01aeb02db2a6b2a43515345475b7c711dffd3