Can't import(Lar, Staging) Contributed Fragments (FragmentEntryLinks with no FragmentEntryId)

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.X, 7.2.10 DXP FP1, 7.2.1 CE GA2, 7.2.X, 7.3.10 DXP GA1, Master
• Component/s: Fragment Administration
• Labels:
  • QA-AUTOMATION
  • liferay-fixpack-dxp-1-7210
  • liferay-fixpack-dxp-17-7110
• Branch Version/s:
  7.2.x, 7.1.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/75866

Description
https://github.com/liferay/liferay-portal/blob/master/modules/apps/fragment/fragment-service/src/main/java/com/liferay/fragment/internal/exportimport/data/handler/FragmentEntryLinkStagedModelDataHandler.java#L146-L161

This piece of code when importing FragmentEntryLinks assumes that the FragmentEntryLink has a FragmentEntry in the database. There are times where it often is not the case, as when using contributed fragments.

Currently Contributed Fragments will not be importable (exporting is okay if you want to save the LAR for later).

Steps to Reproduce

1. Activate Local Staging
2. Add a Fragment Entry Link with no Fragment Entry ( Add a Contributed Fragment)
3. Publish to Live

Expected Result
Fragment Entry Link present on live site

Actual Result
Fragment Entry Link not present on live site

Tested on Tomcat 9.0.10 + MySQL 5.7
Portal master GIT ID: 826a5b06994aa6d1cd2f0afc79023ad7e44f627b