How to change Sales Order Currency

Epicor ERP 10
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1

I have a sales order that has the wrong currency set and the field is greyed out. How do I change the Order Currency? Not sure how this happened as the customer is setup for USD currency.

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Thanks

2

Do you have the “Currency Management” module? Also, has there been any invoices against it?

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3

Delete all the lines on the order, change the currency and add the lines back again

4

That worked. Thanks