Savings clause preserves pre-existing rights, obligations and enforcement under superseded pharmaceutical cost accounting rules and allows investigations to proceed. Rule 9 provides a savings clause that the supersession of earlier pharmaceutical cost accounting rules does not affect rights, obligations or liabilities acquired or incurred under those rules, nor penalties, forfeitures or punishments for contraventions; and that investigations, legal proceedings or remedies may be instituted, continued or enforced and penalties imposed as if those rules had not been superseded.