The next step is considering and agreeing to the bill a third time and advancing it to final passage, at which time its merits may be debated. On third consideration, a bill may again be amended on the floor of the house, but only with the unanimous consent of all the members present, or the vote by which it passed second consideration may be reconsidered, in which case, it goes back to second consideration and may be amended without unanimous consent. In either case, if the bill is amended, it is once more reprinted with the new amendments included.
101 Pa. Code § 9.84