BQ34Z100-G1: StateOfCharge SOC can't refresh

Part Number: BQ34Z100-G1

When I switch two battery,the StateOfCharge  SOC , can't refresh

but the voltage and current refresh correctly 

I use the command 0x02 to read SOC

                                0x08 to read Voltage

                                0x10 to read Current

but if I reset the BQ34Z100 before measure SOC by using command 0x00 0x0041

and the SOC can refresh correctly