...
It is filled in when the calculation is created by the wizard for creation
Updated:
When the duration is changed (the Reference Date is not updated)
when changing the Interest Rate Type
when changing the REFI code manually
during activation, if the Update on activation=Y flag is enabled on the REFI code Změny smlouvy Contract Changes
when changing the duration/mileage (recalculation) by the wizard, the REFI rates are updated depending on the settings – for a detailed description see PD Contract Changes
...