Hey Guys!

I've got a big Problem with Soft Edges.
I have an seperated Object, some parts have Soft Edges, and others have Hard Edges.
When I combine the Objects, the Soft Edges are still soft, but when I combine this Object with another Object, all the Soft Edges get lost.
How i'm able to fix this Problem?

Regards, ZueB

EDIT: Now I've only opened my saved Project from Yesterday, and the Edges of this Object are all harden again -.-