Capture and Show Old vs New Description on Attribute Change in Model Configuration

Summary:

In our current Oracle CPQ implementation, we have a configuration model where the Description attribute value is dynamically generated based on multiple attribute selections. The BML logic concatenates selected attribute values to form this Description.

The current behavior is that whenever a user changes any attribute value, the system recalculates the Description and overwrites the previous value.

The business requirement is to retain the previous Description value and show it along with the new Description value. The first time the user selects attributes, the system should generate and store the initial Description.

If the user later changes any attribute, the system should store the old Description and display it in a separate LOV, while updating the Description with the new value.