To be honest, Mate, not a great deal because there wasn't a great deal to be done other than trudge through the docs, especially the various PTS and flight license reqs to complete the gap analysis.
We knew from the outset that the groundschool conformed because it had been designed that way (and if this is Mick, then it was because of your initial work) - it was only the fact that the UK system had not incorporated NPA25 and GF had no problem with that.
However, although it turned out that the there weren't that many differences between the flight reqs, it all had to be proven and documented; that's what took the time.
In addition, it was meeting the reqs for the various manuals that took a lot of time, especially when one found that changes had been made to syllabi without promulgating or even completing relevant documentation nor following through the changes in the manuals. By the time the manuals were completed, it was found they were at least 2 major syllabus revisions out-of-date; however, could the new syllabi be "cut-and-pasted" in - of course not, they hadn't been properly documented!
In addition, it meant that technically the GF self-audit had been completed against a syllabus that was no longer in force, but hey...!
Actually, as we know, it is usually not the syllabus that steers success, it is the quality of the instructional staff... 'nuff said!!