The exchange rate is not updated automatically , if order date is updated in purchase order header

Hi All

In JDE 9.2 system, for a purchase order entry involving exchange rate , when one enters branch/plant and supplier, the order date is defaulted to current date in PO header screen and exchange rate is populated. then if one changes order date but does not clear (or forgets to remove) the default exchange rate , JDE does not pick the new exchange rate based on the new order date.

Is this a bug in JDE ?

Is a fix available if yes to the above?

Please share your thoughts

Thanks in advance