Tax Indicator - Plant (Correction of Accounting entries from Old to New)

Dear Team,

We are facing issue relating to Plant Tax indicator, User wants to change plant tax indicator for Plant XXXX from Old Value 1(Plant VAT Taxable) - "0" (Non taxable Plant) .

Currently If User is posting invoice with Old Value "1" How do I Correct values for wrong posting with old values? 

Please guide me with the correct postings with "New Values"

Regards,

Hare Rama