Character movement replication without server validation?

I want to create a level editor for my multiplayer game where the (sub)level can be send from client to another client. Therefore the (sub)level is never on the server. Also i use level streaming to load the created levels.

The problem is that the server corrects the movement/position of the character based on the empty persistent level.

Is it possible to use character movement if the level doesn´t exists on the server?