When you see "left to budget" or "over budget" at the top of your budget, it reflects your planned income and expenses, not your actual transactions. Dragging and dropping transactions won’t affect these amounts since they based on planned amounts only.
Example 1: If are planning to spend $1,000 more than you are planning to bring in as income for the month, then it will show you are $1,000 "over budget" at the top like this:
Example 2: If are planning to bring $1,000 more than you are planning to spend for the month, then it will show you have $1,000 "left to budget" at the top like this: