A quality configuration change system would have a brief cover sheet with approval signoffs, before and after descriptions, and expected benefits [wt, cost, performance]. Another item is disposition of material. Do you want to use up present stock, rework, save, or scrap it? Introduction point in time is another item of interest, which over-rides the usual material dispositions.
In an aviation engine plant we called the system the 'Chevrolet' system. The implication is that a major change would cause the creation of later revision numbers. In this manner the change does not get lost. PN xxxxx-02 [assy or detail part] would include the desired change. It would be built into a corresponding higher level assy number, etc.