I'm too old and the businesses I've had were too low-money and low-tech to think about having it recorded automatically and electronically. I just saved every scrap of paper I had so nothing could come back on me.
But the media was never too concerned about getting the minor details of this story right in the first place were they?
So far every news story about this particular perdiem issue has been written as if the government was doing the same thing a newspaper or broadcaster would do. That means NONE of the reporters have investigated the slightest detail, and most likely they have no idea where to begin.