Whenever I change the color of a part in the Assembly Design app, the color still reverts to the previous version despite me saving the assembly and all operations. Does anyone have this issue as well ? In the photo below, I frequently set the color of the nose cone to black. However, after saving and restarting the app the next day, it reverts back to this no color version. 

Edu ​​​​​​​3DEXPERIENCE Assembly Design ​​​​​​​