I imagine experience creators would like to be able to create wholesale clones of their existing experiences so they can tinker with changes without fear of breaking the production ones. Or work on next versions without, again, breaking the current one.
One key to making this work is making sure you can switch around the URLs. Imagine having a "my-experience-v2" ID and wanting to later change it to "my-experience" to overwrite the current version everyone is visiting now.
Perhaps the URLs should not be directly tied to the IDs of experiences. Perhaps instead the owners of them should be able to select a changeable (but globally unique) code-name for their experience, to be used in URLs to their experiences.