It’s the closest to truth you can find (the network capture, not the drop copy). If it wasn’t on the network outbound, you didn’t send it, and it’s pretty damn close to an immutable record.
It makes sense. I'm a little surprised that they'd do the day to day reconciliation from it but I suppose if you had to write the code to decode them anyway for some exceptional purpose, you might as well use it day to day as well.
