With World Partition & One File Per Actor, how do you duplicate a level?

I’m testing out World Partition & Data Layers and want to utilize them.
There’s been quite a few issues so far but one big thing is that I can’t seem to easily duplicate a level to use as a Backup.

For now I have a non-partitioned level as a safety that I re-convert whenever I need to make copies, but if I get too far along I can’t imagine this will be a viable solution.