Created an invoice we need the ability to update the Project Cost collection flex fields

Summary:

Created an invoice with Project cost collection flexfields and validated the invoice and create accounting in draft. We need the ability to update the Project Cost collection flexfields before accounting in final mode but we are unable to update the cost collection flexfields, cancel or reverse the invoice line

Note:

It's a PO invoice with Award budget and Project cost collection flexfields and it populates information from PO, so once PO matched to line, the Project cost collection flexfields getting greyed out.

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