Issue Summary

On a Scrum board backlog (company or team-managed project), when an issue that is on an active sprint is split using the "Split Issue" option, there will be an option to choose whether the issue that is being split (original issue) or the new one that will be created should be sent; It's possible to choose to send them to Backlog, to the active sprint, or to any other planned sprints:

The option to choose where to send issues works correctly for the newly created issue and, in case we try to send the original issue to some other planned planned sprint it also works. However, It does not work If we try to send the original issue to Backlog. In the screenshot above, I split CMST-1, creating CMST-2, ** and tried to send both to the backlog. In the screenshot below we can see that CMST-1 did not go to the backlog, as expected. It's still on the active Sprint:

Steps to Reproduce

1. Create a new project (cm or tm) and create a new sprint
2. Create a new Issue, put it on the sprint, and start the sprint
3. Try splitting the issue, and send the original one to the backlog

Expected Results

When splitting issues on active sprints, If we choose to send the original issue to the backlog, it should go there

Actual Results

When splitting issues on active sprints, If we choose to send the original issue to the backlog, it stays on the active sprint

Workaround

The only workaround is to manually move the original issue to backlog