Issue Summary

When the story’s sprint is changed to Unassigned backlog in JA, the sprint field is not updated in Jira

Steps to Reproduce

1. Step 1 Ensure Admin > Jira Settings > Jira Setup tab > "Allow Jira Align to assign stories to sprints" = Yes
2. Step 2 Take an existing story in JA that exists in any sprint and assign it to the Unassigned Backlog & Save
3. Step 3 Wait for natural sync to run

Expected Results

Story's sprint value in Jira is updated to "Blank", which puts it in the Backlog

Actual Results

The story is not updated and stays in the current sprint

Additional Information
Test 1) Changed the sprint from A to B in JA and wait to sync to Jira
Result 1) Sprint is changed to B in Jira

Test 2) Removed the sprint and blank in sprint field in Jira and wait to sync in JA
Result 2) Sprint is synced to Unassigned Backlog

Test 3) Changed the sprint from A to Unassgiend Backlog in JA and wait to sync in Jira
Result3) Sprint is not updated in Jira and stays in the A (current) sprint

Business impact = high :
As the Sprint is not updated on Jira, it will revert the value on Jira Align back to the Sprint that was assigned, meaning that:

JA - Change from Sprint A to Unassigned
Jira - Nothing changes
Next sync cycle, if any change is pulled from Jira, JA is reverted to Sprint A by the connector

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available