When trying to export Investment Staff page to CSV only the header rows are exported.
The page has several filters. Though most have the -Select option selected (an no actual value) when exporting the page, one of the filters being exported has a value saved.
If this occurs, check the Jobs log for your Export to CSV.
View the Resource URL. It should show what values the filter as well as the rest of the page are passing.
If one is passing a value that it should not have, remove that field from the filter and test. If the export then works, add the filter back.