WARNING - persisted values reset due to settings redefinition.

Hi All,

Is this behavior (resetting persisted values when I add a new choice of a settings item) specific to the simulator?  Or will my customers' settings be reset if I add more options to some of my settings items and deploy a new version?

For context:
While developing in the simulator, each time I change the settings in some way (e.g. by adding a new choice), this message prints to the console and the watch face reverts to default properties. "WARNING - persisted values reset due to settings redefinition."

This is particularly troublesome since it will reset the license keys that customers have entered.  Do I need to build my own migration script to save properties from Properties to Storage and reload on startup?

Thanks!

Mike