Issue Summary

When an issue with a Parent Link value is edited and Epic Link value is set to it, the issue will no longer visible from the plan under its parent issue.

Jira prevents users from adding Epic Link to the issues with Parent Link with the following warning in issue screen:

Cannot use parent link when epic link is set.

However, user still allowed to add Epic Link to the issue with Parent Link. Jira should prevent users from adding Parent Link to the issues with Epic Link

Environment

Jira 8.X
Jira Portfolio 3.X

Steps to Reproduce

1. Configure 2 extra levels in Portfolio hierarchy: L1 (highest) and L2 (below L2).
2. Expose "Parent field" to Jira.
3. Create a new issue with the issue type associated with L1 hierarchy (eg: TEST-1).
4. Create a new issue with the issue type associated with L2 hierarchy (eg: TEST-2).
5. Set TEST-1 as parent issue of TEST-2 using the parent link field.
6. Open a plan which shows both of the issues.
7. shows ticket T2 as child issue
8. Ticket TEST-2 shows ticket TEST-1 as parent
9. Now add ticket TEST-2 to an Epic TESTEPIC-1
10. TEST-1 will be removed as parent link in TEST-2 issue page.
11. TEST-2 will not be displayed as child issue of TEST-1 in the plan as well.

Expected Results

Portfolio should prevent users from adding the Epic Link to the issues with Parent Link value.

Actual Results

One Epic Link is added, Jira hides the Parent Link value which prevents Portfolio from recognizing TEST-1 as parent issue of TEST-2

Workaround

Ensure that the issues with Epic Link do not have parent link value.