Moving an Epic to another Project and changing the Issue Type does not Remove Linked Stories

Problem

If an Epic is moved to another project and simultaneous changed to another issue type, existing Stories linked to this Epic is not removed.

• This then affects JQL queries results.

Steps to Reproduce

• Create a scrum project
• Create an Epic (let's say this is SSP-20)
• Add a Story to this Epic
• Confirm the JQL query:

  "Epic Link" = SSP-20
  

  • Note the Story is returned
• Move the Epic, SSP-20 to another project and change the issue type to a non-Epic

Expected Behaviour

As SSP-20 is no longer an Epic and moved to another project, all existing Epic links should be removed.

Actual Behaviour

• Notice that the UI no longer displays any Epic links
• JQL search continues to show that the Epic link exists:

  "Epic Link" = SSP-20
  

• Check the database issuelink table and notice that the link exists in the database

Workaround

• Manually remove the link from the database
• Perform a project re-index