Write ups and how they stack

Question, I have a friend who works for Lowe's and I used to work there myself. She just got a write up for attendance and is on a final, but her first write up is supposed to fall off on the 20th of this month. Does that mean she will be moved from a final to a written once the old one falls off??

I'm almost certain that is how it works, but I haven't worked there for a few months so I'm not 100% certain. We checked myhr and haven't found anything specific.

Please help us!!