Proforma Invoice updation with revised pricing

Dear Experts,

An condition record had been mistakenly deleted from the system and nearly 1000 Proforma invoices have been created in the system.

As the Proforma invoice do not have accounting document we simulated the updatiopn of the Pricing condition by maintaining new condition record and

we were able to achieve the correct pricing.

Is there any program to update the pricing for Proforma Invoices as a whole?  We tried with BDC recording and the recording doesn't record the

selection value for Pricing updation for "VF02 "transaction "- "B"- Carry out new pricing.

Kindly do provide your suggestions.

Regards,

S.RK