Problem

In Next Gen moving the Tasks and its subtasks to Epic in another project causes error 500 and corrupted data

Environment

Next Gen

Steps to Reproduce

Create a Task with a few Subtask in Project A
Move the ticket to the project B by
Mapping Task ----> Epic
Mapping Subtask -----> Subtask
Follow the prompts
Confirm
Refresh
Acknowledge
Error 500 please see the attache screenshots
The subtasks are not showing in the Epic but there is a broken link between the Epic and subtasks
Deleting the Epic will delete all the subtasks also.

Expected Results

Either give a warning this mapping is not supported or keep the hierarchy as it is expected

Actual Results

Corrupted data

Workaround

To clone the Epic as a Task and move the subtasks to the Task