OFI: Tax in header and lines in AP invoice is different

- In AP workbench user is creating invoice by choosing rate type as 'User' (Exchange Rate 82.1) instead of 'Corporate'.  Upon checking India Tax details form we observe that tax in invoice header and invoice lines are using different exchange rate. Tax header is using rate provided by the user in AP workbench and lines are using corporate rate.

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- Further lines are using tax conversion date of GRIN performed date instead of exchange date entered in the AP invoice workbench.

Please clarify if it is an bug or expected functionality as regime is setup with conversion rate type as "Corporate" & tax types with TPB as invoice.