No, I don’t think you care what the FBI says. But I also don’t think you are particularly well armed to prove any of the things you have said. My husband is actually a lawyer, and it is typical for companies to use copies of servers instead of the physical server in investigations or in court. For the reason I gave: they tend to actually be using those servers.
You have offered no rationale for not doing so. Typing “chain of custody” in all caps is not an argument.