Hello there, Aria Wittenberg.
I'd like to verify if your referring to the decreased current salary when you said about decreased deposit? If so, the salaried employee is deducted from the number of days or hours off. However, the total salary of that period is still the same since the paid time off patched the days off. It's just the current salary decreased but the the total salary is still the total hours worked plus the paid time off.
On the other hand, if the total salary decreased you can check out your paid time off set up. Just in case you want to learn another way to manage paid/sick leave in QBO, you can check out this article for more details: Set up and track time off in payroll.
If there's anything else that you want us to help you with, let us know we can further assist you. Take care!