Body Scars On Preexisting Townies and Played Sims Not Working!

I have to agree, i was frustrated to find that i could only add body scars to new sims too- to me scars are part of story telling- especially top surgery scars, and thus should be something that can be applied to a sim throughout their life as story telling dictates, not something that has to be pre-determined at the beginning of a sim's life.