The post-implementation audit is seldom done, which is unfortunate because it has excellent value for all stakeholders. Some of the reasons for skipping the audit include the following:
a) There's too much other billable work to do
b) The project is done - why take the time
c) Techniques used to get results
d) It's not a high priority
e) Managers don't want to pay the cost
f) Managers don't want to know