While exporting data, Heidi uses system locale. This seems to be fine, but it's not! MS Excel, while importing CSV files, does not respect locale but sticks to en-US number format. For instance - while importing semicolon-delimited CSV files with a comma used as decimal point for decimal numbers (Polish locale), Excel imports these numbers as text. This is nasty as one must convert them to numbers in Excel, what is troublesome. If we could choose a point rather than comma as decimal point while exporting to CSV, then it would be much easier.