Description of problem: It seems that currently it's not possible to unset test plan's parent plan. Calling update() with 'None' has no effect. Version-Release number of selected component (if applicable): 3.8.2 Steps to Reproduce: TestPlan.update(1234, {'parent': None }) Actual results: Parent plan still linked. Expected results: Parent plan field set to None.
Thanks for finding this issue, unset test plan's parent plan is not work now. That will be fixed in latest release.