Hi. I am using the export/import function in grade centre to upload student grades. However, when I do there are gaps in the data which I am having to fill in by hand. I am working on a Mac, but I am taking care to ensure that the .csv file is UTF8 encoded. This OUGHT to work. This is a complex assignment where the grades are calculated by Excel, and being able to upload grades in a more programmatic fashion is important for reducing the risk of error. But the upload just isn't that reliable.