I am trying to open individual jobs with an opening balance and once I enter invoice the balance decreases, how do I do that
Welcome to the Community, nb1960.
Let's make sure that the customer's balance is correct.
When creating an invoice, the customer's balance should increase. To correct this, let's run Verify/Rebuild of your company data. This helps us resolve any potential issues encountered while using QuickBooks Desktop. Please make sure to back up your QuickBooks company file before doing this.
Following these steps should get you back in line. Let me know the results after trying the steps above. I'm to here provide you additional assistance if you need anything else. Have a good one.