I had to replace a defective Smartsolar MPPT RS 450/100. The VRM instance was (0) for this defective device and the replacement device is instance (1). To clean up my dashboard, I would like remove instance (0) from the device list but I want to make sure that the historical data from device instance (0) remains. I realize I won't be able to show graph widgets on the advance page of VRM after I delete it, but I want to make sure the historical data used to show the total historical solar yield and the consumption (kWh data) from this old device are still included. Can I safely delete the old MPPT instance while still keeping the historical data?