Issue with export data to Excel

[MPeinado]

Strange characters when I export to Excel. My regional configuration language is Spanish

 Bug     Correct

AÑO      AÑO

[Grumelo]

Did you try to import your data in Excel by using Import From Text feature and to select UTF-8 as encoding.

if you open the generated .csv directly in Excel it has been read most probably as ANSI and therefore  extended characters are wrongly displayed.