In regard to the modus operandi, I'm not sure exactly what you're referring to. In the body of the Sex Offender Information Registration Act, section 2, there's a stated purpose that discusses the objective of public safety in regard to sex offenders, police investigation of sex offences, and protection of society as the new amendment. That may go to your concern. I'm not sure if what you're talking to is in fact in the test in the Criminal Code. Again, this act is no longer going to require any judicial discretion to determine whether an individual goes on the registry. I'm not sure if modus operandi is relevant in the Criminal Code at this point. You may want to clarify what you mean by that.
As to the information remaining on the registry when the individual is out of prison, yes, it does for the term that the individual is ordered to be on the registry to comply. Once the individual's term has expired, then the obligation to report is no longer relevant to the registry's functioning.