Massive SkeletalMesh disc size increase from 4.23 -> 4.24

Hi all, I have noticed a massive size on disc increase when importing the same skeletal mesh from FBX 4.23 vs 4.24.

In 4.23 i imported a mesh with 12 morph targets and it was 3mb.
in 4.24 i imported the same mesh and it was almost 18 mb!

Does anyone know the cause? Did something about skeletal meshes change? I cant find anything in the documentation. Maybe its a bug?

Has anyone else experienced this and how did you solve it?


bump, I cant be the only one who noticed this?