In this situation it's probably they can claim they have statements in the PSU paperwork that closely mirror what the FBI has in the paperwork for the active federal case. Until the FBI case is over they will hide as much as they can. They still haven't released all of the Explorer case documents. Fischer brought in a culture of secrecy and coverups that Conrad executed at LMPD. It won't get fixed until probably long after Fischer and all of his people are out of office.