Exporting Forms submissions to CSV-file

When exporting submissions from Forms, the exported CSV-file will contain all fields that has ever existed in the form. 

If you were to remove a field from a form, the previously received data for that field will still be visible in the corresponding column in the CSV-file. When removing a field from the form its' column in the CSV-file will still be present but no longer filled with data.

This may lead to some confusion as a form most often changes at least a bit over time, you might remove some fields, rename them etc.