Retroactive Price Adjustments got for Invoice adjustment lines in Receipt Accounting

Summary:

Hi Team,
Business has created a PO with 62550 and Tax as 6724
Receipt accounting generated Tax with 8200 amount

Invoice Lines:

The difference in First and Second entries for invoice lines has generated in Retro Price Adjustment

May I know how the Lines with 8200 changes has come in first screenshot?

Thanks

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