Variant Pricing: Change in Configuration doesn't replace the old value from Pricing

Hello Gurus,

After selecting the characteristics values when I go to condition tab, for first time, it shows all the variant condition accurately. But, once I go back to configuration again and change any characteristics value and come back to condition tab again the following happens:

It adds new variant conditions based on Characteristics value change but it doesn't remove the condition related to old characteristics value. As a result it shows wrong total price. I would highly appreciate if you could guide me in this situation. I want old variant condition to be replaced by new variant condition based on the characteristics value.