To add to that Water pilot,
It seems that the FAA and other regulators want not only documentation of the changes, but also supporting evidence of Boeing's optimistic classifications of risks of failures to changes.
Boeing do not seem yet to understand that the old days of Boeing saying we classify the risk as (a rung or two lower than it should be) X, so we comply by doing Y&Z - stamp please!
They seem surprised that the risk must be accurately classified and not "accountantly" classified, as it all ways should have been.
The Boeing management think they made just a few simple errors in the past, but overall they have and still do exceptional work and everyone should just let the couple of errors slide. We know better so just let us do our thing - trust me.