Merit rounding issue when cross referencing.

There is a Workforce Compensation Plan that is used to add Merit Increase Amount. We are using another Workforce Compensation Plan to post the Salary as there were more than 5 components needed for the original plan. When the Merit amount is cross-refenced in the payment plan, its unintentionally rounding to the nearest 1000. We removed all rounding rules, its still not reflecting the exact value from the original Plan. We need the Merit increase amount to reflect the same as in the Original Plan.