There isn't a way to change the currency on an invoice that has already been submitted. The manually entered invoice will need to be deleted first and then resubmitted with the correct currency.
Follow the steps below to delete an invoice in Lawtrac:
My Lawtrac > Application Administration > Finance Options > Delete Invoice > Look up the Invoice Number
*Note: Invoices with a 'To Accounting' date as well as Collaborati invoices cannot be deleted from Lawtrac and will not be searchable from this page.
Once invoice has been deleted, you can recreate it with the correct currency type.
To recreate the invoice, go to Finance > Invoice Management > Choose from the following two options: 'Add New Detailed Invoice' or 'Add New Summary Invoice'.