Allow default nominal ledger code when importing Supplier and Customer details

I move items from Sage or other packages into Kashflow and they usually contain a column for the default nominal ledger code. Kashflow has this, but does not allow this field to be imported. Add it to the import fields and with the help of a quick 'Find & replace' in Excel I wouldn't have to manually go through and select the default codes on imported Customers & Suppliers.