Meter history lost on disconnection

Hi!

I have 4x SwitchBot Meter:s connected to a SwitchBot Hub Mini. For the last 5 days, the hub was accidentally offline because it was disconnected from power. Now that it's online again, I can see the live readings of the Meter and the latest hours of data, but the history of the last 5 days seems to be gone. Isn't the Meter supposed to store up to 30 days of history and synchronize it when possible?