Business units subject to change and impact analysis required on poitions and assignments

Summary:

Due to inappropriate setups in Financial module, the current Business Units will be disabled and fresh new Business Units will be created. We're trying to anlyse the impact of this change on workforce structures.

Since the business units are assigned to position definitions,

1. All the positions seems to be re-created with the new BU's assigned.
2. All the position hierarchies will be updated
3. All the worker asignments will be updated with the new position definitions
4. Ex-BUs and Ex-Positions will be end-dated.
5. All the reports will need to be reviewed and corrected if needed.

Actually if we were able to change Business Unit value on the position definitions, it would resolve the whole situation but the BU is read-only in position screen and there's no way to update it.