Doubt about Shelly's integration

I would like to know if Shelly’s integration, when you have a meter of that brand that has internal memory such as the Shelly Pro 3EM or the Shelly Pro EM 50, and using the official integration, if the device runs out of connection and during that period keeps the data in memory, Then, when the integration is connected again, it recovers that data from the internal memory of the Shelly Pro 3EM or are lost.