That is also what I have been told,
Originally, when MP Brassard and I put it forward, because he is for Barrie—Innisfil, we were thinking of putting “North Barrie—Innisfil” and “North Barrie—Springwater—Oro-Medonte”, but we were told that's not doable. When we did look through the rest of the names, it appears that it is not: “North” is always second.
It just gets a little confusing. That's what I've heard from some of my residents.