Add previous state in Digital Twin Property Change Events
In the new public preview, change events can be routed to external compute. In this event, the updated values of Digital Twin properties are included. I think it would be valuable to also include the previous state. This would also be valuable for relationship changes, when an item moves through the graph it can be important to know where it came from.

This is a great idea! We’ll update the item once it’s on the near term roadmap.
Keep the votes coming!
Alex
Digital Twins PM Team