Comment deleted on staged site are not removed from live site

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X EE, Master
• Fix Version/s: 7.0.0 DXP FP26, 7.0.X EE, 7.0.4 CE GA5, 7.1.X, 7.2.X, Master
• Component/s: Comments, Staging, ~ [Archived] Collaboration
• Labels:
  • QA-AUTOMATION
  • liferay-digital-enterprise-70-sp5
  • liferay-fixpack-de-26-7010
  • staging_testing
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/49214

Steps to Reproduce:

1. Add Site
2. Add page to site
3. Go to Publishing > Staging
4. Choose Local Live
5. "Select All" assets to stage
6. Save
7. Go to staged page
8. Add Page Comments
9. Add comment
10. Publish to Live
11. View comment on live site
12. Go to Staged site
13. Delete comment
14. Publish to Live
15. View live site

Expected Result:
Page comment is deleted on the live site.

Actual Result:
Page comment is still present on the live site.

Reproduced on:
Tomcat 8.0.32 + MySQL 5.7.17. Portal master GIT ID: 1a716fdb466573ba00f35426157e3b18e491afb1.
Tomcat 8.0.32 + MySQL 5.7.17. Portal ee-7.0.x GIT ID: f5915d5395f8852f3660ea102d614118fb367c0f.