TPS65218D0: Registers which are not reset when IC enters OFF mode with Coin-Cell battery

Part Number:TPS65218D0

Hi Team,

TPS65218D0 could have some registers which are not reset when IC enters OFF mode with Coin-Cell Battery application. One is FSEAL bit of STATUS Register.
 Q1: Are there any other bits or registers which are not reset when IC enters OFF mode with Coin-Cell Battery application?

Registers other than the above are reset to their default values in OFF mode, SUSPEND state, RESET state, or VIN_BIAS < VUVLO condition.
 Q2: Are there any other mode/state/condition that resisters are reset?
 Q3: What voltage is the VUVLO (UVLO threshold) of VIN_BIAS?
        Datasheet shows only VUVLO Hysteresis, 200mV or 400mV.

Thank you.

Best Regards,

Koshi Ninomiya