Google Doubleclick for publishers Date in DS
Google DFP has an export to Google Sheets functionality, from there its possible to export into DS(Although you need to trim the Totals from the bottom of the file)
The Date(European) DFP exports is not recognised by Data studio. eg '19/06/17' is not recognised.
Using a function like CONCAT(20, SUBSTR(Date, 7, 2), SUBSTR(Date, 4, 2), SUBSTR(Date, 1, 2)) to convert it to the YYYYMMDD format doesn't even work.