6.5.1.4.2 Base Reference Date Update

When the Base Reference Date is updated in a scenario, variable pathways behave differently based on their type, subtype, and shock type. The table below summarizes how each type of variable responds. Labels are now used in place of internal codes. The Reset Value column indicates how the Computed Grid is treated during recalculation.

Pathways are updated differently depending on the type of variable.

• If the current value date changes and the variable has a computed grid whose formula depends on this date, the computation will be performed again.
• If the first forecast date changes and any grid contains future dates, those dates will be regenerated.

• Actual Grids (with user-entered shock/current values) are preserved.
• Computed Grids are regenerated only for shock types that rely on the difference between the reference and forecast dates.
• For Absolute Shock Types, the derived shock is internally stored as a reference grid. These are recalculated using the new current values and previously stored shock differentials when the reference date changes.
• A new UI grid view is introduced that displays the Reference Grid for Absolute Shock Types.
• Categorical Variables are unaffected.

Start Date Change:

If the start date is updated within a scenario:

All rules applied for reference date changes will also apply here.

Additionally, the dates in both the actual and computed grids must be updated to reflect the new future dates.