In the past we were able to move an excel file to the "offline" tab. While the tablet was offline we could make changes to the excel spreadsheet save and close the file. When we were back in the office and connected to the wifi we could "sync" the changes by hitting the "update all" button and the excel file would be synced back to the cloud. We could then remove the offline files. We are no longer able to this. Can anyone help me save my work and then sync my files once I'm back in wifi range. Thanks for any advice.