Sage 50 Accounts

When I sort my suppliers by balance, some of the accounts appear multiple times. Would this be fixed by re-indexing suppliers? This does not happen when sorting by other columns

Whenever I select one of the lists for Invoices/Cust Orders/Purch Orders the list always sorts with the most recent transactions at the bottom using the Inv No, SO No etc. Is there no way to default or save the last sort so that it does it by Date order…