Merge properties under a single account?

I started using Stessa a year ago, but the property I wanted to manage wasn’t on Google Maps, so I couldn’t find the address. I add a similar property to Stessa with an address that was known at the time and have been “managing” that property ever since. The correct street address for the correct property is now known and has been added to my account. How can I “merge” (or just copy all the activity over) for the last 12 months from the one property to the other?