I disagree with the member's interpretation.
The previous chair occupant made a ruling and considered it a substantive new motion. We then started debating it. We've had a debate now. You can't, three persons into the debate, try to deem a motion no longer acceptable after it's been received and accepted by the chair.
You've returned as the chair, and you're occupying it now. A ruling's already been made, so you can't do this after the fact. It's not a valid point of order to raise a matter after debate has already commenced on the motion.