item ledger table NAV 2009 RTC SP1

Hi

Can anyone explain a problem I have linking the Microsoft Dynamics NAV (2009 RTC SP1) item ledger table to Microsoft Excel or Access. When I do so I get a spreadsheet 61 columns wide which ends with the column 'shipment method code', yet there are a further 12 columns in the item ledger table, relating to various quantities and costs. Exactly the same thing happens when I link through Access. However, if I just display the table through NAV classic and copy paste a row into an excel spreadsheet, I get the full 73 columns

Many thanks