User wants to know why the existing project assignments don't clear out when copying assignments from a project with no assignments?
Although the Copy Assignments feature allows you to add assignments from one project to another, it does not affect the existing assignments in the target project unless you check the option Replace existing assignments when copying. If you check this option and then copy assignments from a project with no assignments, BQE CORE removes all the assignments in the target project. Check CORE Help Center for details.