Level instance or loader device in UEFN?

One of my current creative maps is literally built off of level instance/loader devices, but when i tried to port the map to UEFN, i get a message saying it isnt supported? Is there a way to have sonething similar to the instance device in UEFN?

Level Instance is not yet supported in UEFN, but we do hope to support it in the future.

Do you have an estimate of when this may be supported?

Any updates on when this would be implemented? Maybe sometime this year?