Q: Why does a bill print when the balance due is zero?
A: A bill should not print if the balance is zero and there is no other activity. (A payment or adjustment is "other activity" and will cause a bill to print, but you can suppress it.)
If the bill shows nothing but the zero balance, usually it means that the individual balances for fees, expenses, late charges, and taxes are not zero. For example, if a payment was not applied properly, you might have a matter with fees due of $10.00 and a $10.00 expense credit. A bill will print because the balances are not zero, even though the bill format may only show the total due (which is zero).
To see if this is the problem, look at a prebill: Bills > Prebills on the menu. The prebill always shows the individual balances, so you can see if any are non-zero.
To fix this problem, enter a new transaction. Click the Payments button and click New. Leave the Type as Payment. In the Amount frame, uncheck Automatic Allocation. Enter the proper amounts in the separate boxes. In our previous example, you would enter 10 for Fees (a credit) and -10 for Expenses. Enter a Description to explain what you have done, such as "Fix payment allocation." Click Save to save this transaction.
Print a bill to add this transaction to the matter balance. Now that each balance is zero, no further bills should print unless there is more activity.