Test Plan Board's integrity is compromised when editing the field "Change Test Plans associated with a Test" in bulk edit

Steps to reproduce:

Create a test plan with some tests.

Go to the Test Plan board, create a folder and move the tests from the folder All to the created folder.

Then, search for these issues in JIRA (using testPlanTests JQL function). Bulk Edit the issues and in the field Change Test Plans associated with a Test insert a different Test Plan.

Finish editing.

Now go back to the original Test Plan: There will be no Tests. (CORRECT)

Go to the Test Plan Board: Orphans folder will display a negative number of elements and the created folder will still have the Tests that are no longer part of the Test Plan.

Another scenario:
Steps to reproduce:

1. From a Test Plan Board, go to a Test that belongs to the Test Plan.
2. Inside the Test remove the associated Test Plan.
3. Go back the Test Plan Board and refresh the information.

Problems:

1. The folder Orphans get a negative value (if previously it was at zero).
2. The Test it is still shown in the folders it was previously assigned to.