The reconstitution was to try and find out what happened to Madeleine and what opportunities there were for it to happen. While ever people are uncooperative there is suspicion about them having something to hide.
Murat appears to have cooperated fully and appears to have been “cleared”.
According to the following ... Murat had not been contacted about the reconstruction ... but even if he did have private concerns about it he, in common with Kate and Gerry, would have had absolutely no option but to comply and put in an appearance.
PGR annuls reconstitution of Maddie's disappearanceMAY 28, 2008
00:00
The reconstitution of the night Madeleine McCann disappeared on 3 May 2007 was overturned. The Attorney General's Office announced yesterday that the procedure, which was scheduled for tomorrow and Friday, had been canceled because four of the participants who were supposed to participate were not going to be present.
According to the Attorney General's note,
the stagecoach was "given no effect" due to the "announced no-show" of four friends of the couple McCann who were holidaying in the tourist village of Praia da Luz, Algarve, at the time the child disappeared on May 3 of 2007.
Kate and Gerry McCann were willing to take part in rebuilding Madeleine's disappearance, but her friends questioned the validity and the proposed model.
"Basically, it is not up to Gerry and Kate [the realization of the reconstitution] because they are defendants and, if their presence is required, they will, they have to go," the couple's spokesman, Clarence Mitchell, recently assured Lusa .
"Everything depends on the friends, who were invited to go too, but since they are not defendants, they have the right to question the usefulness of the exercise and if it will help to find Madeleine, and the answer at this moment seems to be no," he said at the same time the spokesman for the couple. A reconstitution of all the steps taken by parents and their friends present at the time was suggested by the Judicial Police (PJ) about a month ago, first through McCann's lawyers and then by individual convocation.
As late as yesterday, the DN reported that Roberto Murat, the British-accused also in the suit, had not been notified of the reconstitution yet and that due diligence would be at risk because of the likely lack of McCann-friendly couples.
Madeleine McCann disappeared from the bedroom where she slept with her two siblings during her parents' vacation in Portugal.
https://www.dn.pt/arquivo/2008/interior/pgr-anula-reconstituicao-do-desaparecimento-de-maddie-992329.html