khalsapreet ji,
--- As far as I know, I think this "panthic ardas" was written by the gathering of Gursikhs - the same gathering of Gursikhs who drafted the SGPC Reht Maryada. --
So the remaining part of Ardaad is not actually Guru's bani, and is drafted by SGPC. Does that mean, present form came into existence duing 1930s when SGPC activities were on regarding rehatnama and other stuff?
Somehow sounds to me that Ardaas has been modified as Rehatnama was interpreted in a modern way. I may be wrong though. Most of the articles found just inform what Ardaas contains, when it is said, why it is said. But who said it first in original form, and then who came up with present form is still untold.
Thanks.