On my last 4 day trip I flew with a former Horizon Dash 8 FO (spent 3 years with Horizon), she is now a CA at SKW. She told me something that I would like confirmation on, so this question is for Horizon pilots ONLY.

She said that if you're a 4th year Dash FO and want to become a CRJ FO, once you transition you will go back to first pay. Also, that you get paid based upon your seniority and not your a/c (at first it's your a/c then over time you get your seniority). So you can be a 6th year Dash FO making 6th year CRJ pay unless you transition then you go back to first year. Is this true? How about for upgrade?