Before I do that, I have few questions/points:
1. The wrongly created Purchase Invoices were done before setting the currency of the vendor to USD, so were created in LCY which is CAD
2. I changed the currency of the vendor to USD and created the new Purchase Invoices
3. Is it and can I switch back the currency to CAD in order to enter the Credit Memos in CAD and then switch back to USD
4. What about the items sold and released, would they be an issue?
Much appreciated