They aren’t going to stand there and examine the copies over the dead body for any possible differing detail, they will do so at the station. The scene of a suicide is treated like the scene of a crime as they are still gathering evidence as to whether it really was a suicide or not. It’s part of the problem with the bigger picture of no sanctioned option, our privacy is invaded in death to a degree that does not occur for those dying naturally or in the hospital, a witnessed accident, etc. We are forced to have a question mark over our death, which invites invasive investigation. Devices will be taken, notes will be taken, it doesn’t matter if anything looks identical at first glance..it will still be taken.
I have been in contact with people who are there for the aftermath of a suicide and this is what happens. I wish more people would give their experience and knowledge if they have any on this subject, if they have a history involving a suicide and dealing with the authorities afterward, because people are obviously not informed enough when considering the inevitable police involvement.
They can keep notes for more than a year and read them before the designated recipient even gets a chance to, you could be buried in the ground before the people you intended to read your notes, do so. Copies or not.