How to correct order detail discrepancy in Meroxio theme?

Hello

We are using the Meroxio theme. We Are facing a Problem with Order Product Liquid. For example if the customer order one product with 1kg. if we don’t have a 1kg product we are removing 1kg product and adding another variant like 500gm with 2 quantities. once our team edits this we are getting the proper amount, but when customers login into our website and see his/their order detail then they got the wrong Order price (1kg + 500Ml with 2 quantities).

Could you please help me to find the line item object field which represents the removal from the order? Kindly help us to solve this issue.

Thanks In Advance