On the content details page for most charts, you can now preview and modify the data and the entity labels that will be applied to the chart once ordered. Click the blue Generate data files link at the bottom of the data section on the content details page. This will open a data window containing data and entity label CSV files. These CSVs can be downloaded, modified, and uploaded to apply quick edits to the data or labeling for that particular chart.
Learn more about generating data files.