Kate McCann says in her book that she was shocked by the force of the British police's opposition and the lengths to which they seemed prepared to go to deny them access to the files
There is, therefore, much in the British police files that the McCanns have never seen ... but of which Amaral has knowledge
That is skewed.
What is true is that the McCanns asked for certain information while they were still arguidos which they were denied. I admit that even I thought that (the request of the McCanns) a tad forward at that juncture.
What was true at that juncture is not remotely true since.
I think it highly likely that the McCanns have seen more than we've seen on line and beyond doubt what they have will be much better translated than much of what we see on line.
I've no clue whether the McCanns have Harrison's report, but I confidently predict it doesn't contain any unpleasant surprises except, possibly, for Amaral, who appeared to believe he had 'corrected' Harrison on interpretation of the forensic results from the car ...
We know from Kate's book that Bob Small expected the PJ to be in for a rude awakening when the files were released, but we don't see his report on-line, either.
No unpleasant surprises, except possibly for Amaral, there, either.