Download grid as Excel ad-hoc when data rows/columns are hidden

Summary:

When downloading grid as Excel-adhoc in Narrative reporting, it gives an error if all data rows/columns in the grid are hidden. This was not an issue in FR before

Detail:

Report in FR:

Opens in HTML and select Export In Query-Ready Mode

Downloads the file as expected:

Opens the ad-hoc grid with no issue:

We migrated the same report to Narrative Reporting:

Opens in HTML and try to download the same grid above using Download as Excel ad-hoc:

Below error message pops up:

This is due to the fact that the data columns are hidden as they need to be grouped and calculated to produce the final desired number using formulas.