I exported an in-game asset to make it from Children compatible with Teens and Higher (A Dress), yet the geometry is wrong (I can't post pictures so you'll have to do with URLs),
the dress looked great on Children Male and Female, and I wanted to get it for Teens, Young Adults, Adults and Elder, so I did use the standard set of tools (S4Studio and Blender),
On Blender the geometry was correct on every node of the model but in-game it looks like there are split joints, strange human body parts, and floating accessories (Yep, it's on a male).
P.S. I did the new gender appropriation (Children - Male & Female) in S4Studio but kept the asset as-is for kids.
Do you have any recommendation to make every joints seamless, and re-create the original geometry ?