Maybe things have changed... I hope.
I was at 18.75 based on a a 25 hr work wk.
I was told I would get my rate and not progress to anything higher til my progression rate went above that. They bumped me back to 9.14 ph, and I progressed from there. I got hosed. I dont think they are doing that anymore, unless at least til you sign your quit papers, and are in a new category. Get it in writing, even my HR guy thought I got screwed, and I did. But I hear its all better now. You are at the bottom of the list as far as driver seniority, but you keep your yrs for vacation etc. Keep a watch on that list, also.