Make a copy of an Invoice and change its Currency: Unexpected Error

A user encounters an "Unexpected Error" when doing the following:

1. View an Invoice then click  Actions >Make Copy
2. On the New Invoice, change the Currency
3. Click Save

The "Unexpected Error" is thrown because the copied Invoice is linked to a Sales Order. The link is somewhat retained with the new Invoice resulting to an incompatible set of currencies on the Sales Order and the new Invoice.


To get around this "Unexpected Error", use Actions > Make Standalone Copy.