[GRO] Freckles/Birthmarks revert to base game version on aging

I noticed that when my sims age up from Toddler to Child to Teen, every time it will be set to the base game freckles upon aging up. The ones that came with Growing Together don't age through each life stage by default. I also notice that some of the arm birthmarks are like this as well, changing to something random upon aging up. I know you can change this yourself easily in CAS, but it would be nice if this were fixed too.

Edit: I discovered it's more than just the arm Birthmarks or skin details that randomize upon aging, it's all sections of the body. 

Edit By Crinrict: Corrected pack tag.