Replicated Level Streaming

Hello, similar question here.
I have sub level not “always loaded”, but “BP loaded”. When I load them on server with “Load level instance” on server only, Clients sees nothing. When I multicast the “Load level instance”, then all clients see the level, but the actors in the level are not replicated. When the actors in the loaded level per “Load level instance” begin to move, nothing happens on client side. I used the same actors in “always” loaded sublevel, so it must have related to load level in bp per “Load level instance”.
I search web but found no answer… how properly load a sublevel with replicated actors with “Load level instance” so the actors are replicated in normal way, like movement and everything else?