Idea Summary
The way to show or hide columns in an Interactive Report has changed in 26.2. Instead of the shuttle, there is now a list of selectable/draggable columns. This is great, but the option to select all columns is missing. This was also possible with the shuttle. 

Use Case
A lot of our customers are exporting data from Interactive reports, but they don't want to see all columns by default. Before 26.2, they could easily select all columns and make the export. Now, they have to select each column individually, which is cumbersome and time consuming.

Preferred Solution (Optional)
Add a ‘Select All’ checkbox next to the column filter.