We've noticed some minor changes in the export to excel grids. Sometimes attributes with type float and currency have different cell properties in excel. Is there a change in the java libraries which are used for this behaviour? Edit: We have a column with hours. After exporting to excel, we want to calculate the sum of the hours. In the cell below the last hours value you can't use SUM. Why? Because mendix created custom cell properties. When we change our mendix locale to English and then export, this problem doesn't happen. Could somebody explain this?