Multiplayer: How do I load a new level in PIE

I’ve set up a lobby system that then lets the server load a new level, via Server Travel. This works fine in Standalone, but not in PIE.

I understand that Server Travel doesn’t currently work in PIE, so I’m trying to find a workaround. Using Open Level will get the server to the new level, but the clients get moved to the default level. Is there a way to get the clients to load the level alongside the server?