staging.merge.tags.by.name property does not set the default value of "Merge Tags by Name" option

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, Master
• Fix Version/s: 7.0.0 DXP FP58, 7.0.0 DXP SP9, 7.0.X, 7.1.X, Master
• Component/s: Staging, Tags, WCM > Publication
• Labels:
  • 7.1-could
  • ee-ts
  • liferay-dxp-70-sp9
  • liferay-fixpack-de-58-7010
  • liferay-fixpack-dxp-1-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/62056

Reproduction steps:

1. Create portlet-ext.properties file under (Liferay Home)\tomcat-9.0.6\webapps\ROOT\WEB-INF\classes folder
2. Add this line to the portlet-ext.properties file:

   staging.merge.tags.by.name=true

1. Start up bundle
2. Create a new site
3. Set up local staging, with default settings
4. Create a web content, add a tag
5. Start a new publication in Publishing --> Staging menu
6. Select "All" in "Content" section 
7. Click "Refresh Counts" --> Check "Tags" --> Click "Change"

 Expected behavior: "Merge Tags by Name" option should be checked by default

 Actual behavior: "Merge Tags by Name" option is unchecked

 Note: the original problem was that in Remote Staging the "staging.merge.tags.by.name" property is ignored in Live instance, when using "Advanced Publication" in Staging instance. Even when no specific option is set during the publication, it overrides the "Merge Tags by Name" option, when the Live site processes the publication.