DzImageProperty/DzFloatProperty losing map values

shoei321

When I create a property with a map value on a node, save the scene and reload it, the map value is lost.    I've seen this behaviour in c++ sdk code, and am also able to reproduce it when I manually add a property via the Edit Mode in the Parameters pane.     Interestingly, for mappable DzFloatProperties the float value of the property is preserved through a save/load cycle, but the map value is lost.

What is the correct way to add a map-based property to a node and have it's value be persisted on save?

Thanks