Inquiry about Model/Part Streaming

I’m currently scripting client objects for a JToH/KToH style game. Currently, the client objects are streamed in as the player goes into a tower and explores it, but the objects need to be reset every time the player’s character resets. The easiest way to do this would be to force the parts to be streamed in again, as doing so is how they are initialized the first time to do this. How could this possibly be achieved?