okay so now I feel like a dumbfuck, let me revise my question (since it's not clear):

If you have to submit a new app when you're aging a character up more than one year (like Billy going from 5th to 7th year) how much of a re-write are we talking? Is it just adding something about the skipped years into the background section, and changing the age? Simpler than that? Completely re-writing the app from scratch?

And does it technically count as a drop, therefore you have to wait a week before it gets approved?