Pervious income(Maintain tax calculation) was not picking for Calculation

Hi,
In the Maintain Tax Declaration page for an employee, we entered a Previous Income amount (e.g., 80,000). However, after running the payroll, it was not reflected in the previous salary. We took a trace, and while the element was displayed, it contained only one row, which was empty. But on the same page we have enter the Income tax its was picking for the calculation

Below I have attached the document.