Seatlocked meaning if you are right seat in the RJ and want to bid a line in the Saab you have to wait three years to do so. If they offer you upgrade and you are in the RJ you will move to the Saab for the upgrade when you are ready, regardless of the seatlock time--this is how it has been explained to me. Mesaba long timers correct me if I am wrong.

FO--Capt(Saab)--Capt(RJ)