Web content: empty document library fields after an upgrade if the context wasn't ROOT

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.1 CE GA2, Master
• Fix Version/s: 7.1.X, Master
• Component/s: Dynamic Data Mapping > Upgrades
• Labels:
  • QA-F
• Story Points: 1.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/41699

Steps to reproduce it:

1. Modify the context for Liferay portal using "ohimportal" in Liferay 6.0.12.
2. Startup the 6.0.12 portal.
3. Create a document.
4. Create a web content structure with document library field.
5. Create a template for that structure.
6. Create a web content using that structure selecting the previous created document in the DL field.
7. Upgrade the portal to master
8. Edit the previous created web content and verify that there is no document selected in the DL field.