How to propagate changes in position definition to employee's assignment

Oracle HRMS R12.2.9, RUP17

We have positions assigned to employees. Due to business changes, the position definition is changed. For example, the location is changed from X to Y and the supervisor is changed from A to B.

How does this change reflect on the employee's assignment.

Example - We have a position "Manager Infrastructure-IT Division".

In the position definition, the location is set as "US 001" .And the supervisor is set as "Peter"

Employee # 100 is assigned to this position. In employee's assignment, we have location as "US 001" and supervisor as "Peter"

For this position , we now change the location to "US 002" and supervisor to "to "Sam" using the navigation Work Structures -> Position -> Description. Lets say we do it in UPDATE mode.