Issue Summary

After converting an Epic that has a parent link to the same issue type as the parent (or to an issue type lower in the hierarchy), the parent link remains and can not be edited. 

This is reproducible on Data Center. 

Steps to Reproduce

1. Create a new issue type called 'Initiative'
2. Configure the hierarchy to be above Epic (at the top level)
3. Create a new issue with the issue type 'Initiative' 
4. Link an Epic to the new Initiative using the parent link
5. Open the Epic and use More > Move to change the issue type to 'Initiative'

Expected Results

The parent link will be cleared as you should be able to only link an issue to a parent issue of the corresponding hierarchy level that you've configured for your plan.

Actual Results

• The parent link remains
• The parent link can not be edited, as this behavior shouldn't be allowed

Workaround

To remove the parent link: 

• Convert the issue back to an Epic.
• Remove parent link. 
• Convert back to an Initiative