i am going out on a limb and going to say if you are sitting 600+ on the senioirty list saab CA may take a while to hold. That is just my guess. I think a lot of the MSP Saab CA have recently upgraded and seatlocked. However on the otherhand there are long time MSP CAs waiting for the jet schedules to get better.
I am just guessing but i think its like picking lottery numbers