Let me explain autozone
It's summer, lots of guys are going to cover feeders. So what the centers do, is they might pull somebody off of their bid route which they agree to, to in turn cover the feeders Guys route all summer as his route is easier than the drivers bid route. They can then place you on his route until the guy comes back from feeders.
Ups can do what is "good for the company" in their eyes which means NOT PUTTING YOU OUT BLIND. You will not win this one.
The seniority grevience you have I have a feeling doesn't have the merit you think it does. If it does, and you are owed a lot of money... classifications will magically change and you will still not get paid.
I file tons of greviences, I don't let them walk all over me but I don't file for bs. I file for 9-5, harassment, retaliation ect. Your digging a deep hole for your self and your career at ups.
I know guys who have cover drove for well over 2 years + their hub seniority and they just got full time this past month. Yet you believe they skipped over all of these guys and you with your 1 year seniority??!?!?!?!?
Keep playing know it all games. You will be fired frivolously and you will be out for weeks over this. You will come back with time served suspensions for absolute bs. Ask around, it's common in the district.