The second paragraph appears to be the substance for checking for evidence of murder. The third one (resulting in the local advocate going to the police) appears to be the same person mentioned in the David Rose article: a guy who had previously been interviewed by the police and had never mentioned anything about murder.
One or two victims have stated to the inquiry that they were dragged from their beds, but obviously they weren't murder victims.
I would have thought that the police would have asked for the names of those who'd allegedly disappeared and tried to cross-reference them. I haven't come across any report stating that the police had been given specific names, which seems unusual.
I can understand the need to explore the allegations, but it comes across to me as Chinese whispers.
What's possible is that some people are conflating two memories: kids taken from their beds (but who returned) and the short-term residents who were only there for a couple of weeks. It's also possible that the media frenzy stating that the "remains" of x children had been found produced false memories.
If some poor kids had been murdered, there's no evidence that it happened at HdlG.
In April 2006 States of Jersey Police became concerned at the number of carers who were being accused of involvement in offences concerning the abuse of children. This was particularly highlighted when the commanding officer of the Jersey Sea Cadets was arrested for downloading pornographic images including some involving sea cadets. The attitude of the Sea Cadet authorities of that time caused great concern. Accordingly, police began to examine a number of previous cases and during this review were continually referred to abuse which had allegedly taken place at Haut de La Garenne. This covert phase of the enquiry went on until November 2007 when the investigation was made public. Because of the concerns of victims about any involvement of the Jersey caring agencies it was decided to seek the assistance of the NSPCC in London. Within a week seventy victims had come forward, most detailing abuse at HDLG.
Among the victims were a few who said that children had been dragged from their beds at night screaming and had then disappeared. Two others said they had knowledge of human remains at the location but were not specific. A local advocate also came to police and said he had a client who knew there were human remains buried at the home. The collation of numerous complaints of both sexual and violent abuse of children led to the decision being made to enter the home to carry out a screening search for human remains and evidence in support of the allegations of abuse. The advice and assistance of the NPIA in the deployment of UK specialists was secured.
http://voiceforchildren.blogspot.com/2012/04/summary-of-evidence.html