A number of data elements with a TEXT value type option set attached to them have data already collected. We want to assign a different option set (of number value type) to the same data elements. How can we make these changes and how will this affect the data that is already collected?
I have read the topic you have suggested, Must the modification of data occur in the database? I exported the data in CSV format, but I think there is no way to change the data to match the new option set in the downloaded file.