YGH has recently completed a post completion audit on a five year contract that has...

YGH has recently completed a post completion audit on a five year contract that has only recently come to a conclusion. The main finding was that the project delivered most of the expected benefits, but that it cost significantly more to implement than had been anticipated at the project appraisal stage. YGH would not have proceeded if the true cost had been known at that stage.

The project was the responsibility of the production department, which is presently managed by G.

When the project was proposed, the production department was managed by H. H is now YGH's Director of Operations.

How should the finding from this post completion audit be interpreted?