Did you do more to it than just change the axis labels?
It's not even got good data in it on initial opening, the 12598646 does not flow 55.39 at the Gen3's 0 kPa vacuum. Gen3 0 kPa vacuum should be the Gen4's 400 kPa pressure delta.
It also has 32 cells in the Flow Rate (edit: & Offset) section, while the Gen4 files have 33. 768 kPa is missing.