The page above shows how to rename a Grouping on the details tab of a report. It would be great if the text mode used would also change the Axis name on the chart tab of the same report.
Due to having a shared instance with many teams, we've had to get creative with our field naming conventions. The naming convention works great for differentiating which team owns what fields but creates an undesirable result when it comes to displaying grouping/axis names in chart reports. The challenge is chart reports today only allows you to display the actual/physical name of the field.
It would be great if we enabled he reporting engine to display chart axis names using a Grouping's text mode name or displayname.