PilotJames
It says the approach speed correction on the status page is dependent on current flap and slat position and is updated for landing?
True. The slat/flap can jam in different combinations and the STS page gives you the appropriate Vref addition to allow you to calculate Vapp. It is not the STS page but the VLS that you see is gets updated as you configure. As I wrote before VLS is real time speed. Its displayed value is always correct whether in normal or abnormal situation with one surface jammed.