Master data missing in APD:query->Flat file

Hi APD experts,

I am working with APD in my flow i extracted Query data into Flat file.

Please see screen shot for APD: Query->Hide Column->Flat file.

While i down loaded data into Flat file(.CSV),its downloaded only key values and master data missing in flat file(Material Description or Plant names).

How to resolve this,can you please light on this.

Best Regards

Hemanth