Good news: the Store Exchange process will continue to work after October 3, 2023!
In fact, you don’t need Intuit’s servers to share data with other stores. Intuit’s servers are a very popular method; however, it’s just one allowed option out of many already built in QuickBooks. Therefore, yes you can share data with other stores.
Here are the methods allows:
Network File Transfer (think Dropbox storage, etc)
We can help you configure any of the methods above. Just call!