But anybody who was a Master’s level psychologist at the time of the changes would still be designated as Master’s level and not considered equivalent to PhD level?

To answer your question, no, a grandfathered person with a master’s degree who is placed on the Register of Psychologists would be given access to the same registration title as a psychologist with a doctoral degree. The registration titles used for those on the Register of Psychologists are Psychologist, Registered Psychologist or R.Psych.

If grandfathered, there would be no differentiation in these titles according to the education of the applicant.